Two people are shot dead and three others injured after gunfight broke out between 'rival gangs' at bustling Houston flea market

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Two people were killed and three others were taken to a hospital with injuries after a gunfight broke out between two groups at a bustling Houston flea market, where thousands of people were shopping on a busy Sunday. 

The  shooting at the open-air market came just hours after a gunman opened fire at a California church, killing one, and a day after a teenager targeted black shoppers at a supermarket in Buffalo, New York, killing 10. 

In Houston, the Sunday afternoon incident arose from an 'altercation' that involved at least two guns and all five of the people, according to Harris County Sheriff Ed Gonzalez. He said no 'innocent bystanders' were injured.

No arrests have been made, but investigators believe one of the people hospitalized was among those who opened fire and two more suspected shooters were detained at the scene and were questioned, a sheriff's deputy told KTRK-TV.  

Family members identified one of the victims who died as 29-year-old Juan Romero, who was at the flea market to enjoy his Sunday, just like any other weekend, his sister Yeraldi Romero told KTRK-TV.  

Two people were killed and three others wounded after a gunfight broke out between two groups at a bustling Houston flea market on Sunday, where thousands were shopping 

Family members identified one of the victims who died as 29-year-old Juan Romero (pictured), who was at the flea market to enjoy his Sunday, just like any other weekend, they said

Romero said her brother was with their cousin, who is one of the three at the hospital. She said she has questions about how a day at the flea market turned into such tragedy.

'This tragedy happened and I don't know why,' Romero said. 'He always made everyone laugh, very happy, joyful, so it just really hurts because he's my older brother and I look up to him. It's very hard.' 

Thousands of people were shopping at the the market 14 miles north of Houston's downtown when the shooting began around 1 p.m. Sunday, Gonzalez said on Twitter.

The Sunday afternoon incident arose from an 'altercation' that involved at least two guns and all five of the people, according to Harris County Sheriff Ed Gonzalez

Gonzalez said no 'innocent bystanders' were injured and two pistols were recovered

Thousands of people were shopping at the the market 14 miles north of Houston's downtown when the shooting began around 1 p.m. Sunday, Gonzalez said on Twitter

The incident arose from an 'altercation' that involved at least two guns and five of the people

Police believe the people involved were men in their 20s who appeared to know each other

The sheriff said multiple shots were fired and that deputies recovered two pistols from the scene. 

Authorities did not immediately provide further information about what led to the shooting but said all the people involved were men in their 20s who appeared to know each other.

'It's very tragic that this happens,' Major Susan Cotter with the HCSO said. 'There are a lot of people … just trying to come out and enjoy the flea market, have something to eat, have something to drink.'

Investigators said there is surveillance video of the incident but they haven't found any that shows the entire  incident. 

The HCSO said they are still looking for additional video and speaking with witnesses to figure out what led up to the deadly shooting. 

The shooting in Houston unfolded on the same day a shooting at a California Church that left one person dead, and a day after the after a white 18-year-old shot and killed 10 people at a supermarket in Buffalo, New York, in what officials described as a massacre aimed at killing as many Black people as possible. 

Gendron allegedly murdered 10 people in a 'racist hate crime ' at a supermarket in Buffalo, NY on Saturday. People are seen outside the store after the shooting

Suspected gunman Payton Gendron was taken into custody outside Tops in Buffalo Saturday

Payton Gendron, 18, who is accused of murdering 10 people in a 'racist hate crime ' after firing a barrage of 50 shots at a supermarket in upstate New York reportedly conducted 'reconnaissance' at the store before carrying out his attack

Payton Gendron, 18, is accused of murdering 10 people in a 'racist hate crime' after firing a barrage of 50 shots at a supermarket in Buffalo, New York, before he surrendered to police outside the store. Eleven of the shooting victims are black.

The teen, who claims to identify as a white supremacist, issued several 'clear and hate-filled' statements about his motive and state of mind following his arrest, and admitted that he was targeting the black community when he carried out the massacre, an official confirmed to CNN.

Erie County District Attorney John Flynn revealed Sunday night that officials are considering charging Gendron with domestic terrorism.

Gendron, of Conklin, NY, pleaded not guilty to first-degree murder following Saturday's attack. He is being held without bail and faces life in prison.

The alleged killer, who is due back in court on Thursday, is currently on suicide watch after he 'put the gun under his chin' as though to shoot himself following Saturday's attack. Officers managed to 'talk him down' and arrest him. Gendron is being held in a separate unit from other inmates.

Police believe Gendron planned the attack for months before driving three hours to Buffalo to carry out the vile ambush that authorities are calling an act of 'violent extremism' motivated by race.

On Sunday, just hours before the shooting in Houston, one person was killed and five others were shot at Geneva Presbyterian Church in Laguna Woods, California, about 55 miles southeast of Los Angeles.

Six people at the house of worship were struck by gunfire after the shooter, said to be an Asian male in his 60s, opened fire at around 1:25 p.m. That man is now in police custody.

Police tape seen after a shooting at Geneva Presbyterian Church in Laguna Woods, California

The shooting occurred at 1:25pm on Sunday in the retirement community of Laguna Woods

About 40 parishioners witnessed the violence - but those who were present also helped to prevent further bloodshed by overpowering the shooter and tying him up. 

The congregants of an Orange County church are being hailed as heroes after they managed to hogtie a gunman who went on a shooting spree in what authorities are describing as an act of 'exceptional heroism and bravery.' 

The group reportedly confiscated his weapons and restrained him until police arrived on the scene. 

One person suffered fatal wounds and died at the scene at the church. Four of the other victims were critically wounded - while a fifth suffered minor injuries.

All of the victims were adults and have been revealed to be four men aged 66, 75, 82 and 92 and one woman, aged 86.

Two of them were taken to Providence Mission Hospital, the medical center confirmed. Another victim was transported to UC Irvine Medical Center, and two more were transported to Orange County Global Medical Center, including a 92-year-old man who was grazed by a bullet.

 A motive for the shooting, which took place in an auditorium called Simpson Hall, rather than the main auditorium where services are normally held, wasn't immediately known - but investigators said they don't believe the gunman lives in the community.