In a case of double murder-suicide in California, a man fatally shot his partner and her 14-year-old daughter before killing himself. Raymond Thomas Jackson, 50, of Vallejo, used a shotgun to kill his 53-year-old domestic partner and her daughter, police said in a statement Tuesday.

Police arrived at the scene after the teenager's 12-year-old sister found the bodies of her mother and sister in the living room. “After contact with the suspect," the girl fled the home, called 911 and ran to a neighbor's home, police said. The 12-year girl told police that Jackson shot her mother and her sister. Officers went into the home and found three unresponsive people.

According to Vallejo police, Jackson had been convicted of several crimes, including drug sales, assault with a deadly weapon on a police officer, and driving under the influence. He was arrested on March 8 over suspicion of misdemeanor domestic violence and was prohibited from lawfully having a gun, Vallejo police Capt. Jason Potts said.

"It's tragic," Potts told Bay City News Service. This latest incident occurred following domestic violence.

crime scene tape
This is a representational image showing a crime scene tape in Aberdeen, Maryland, Sept. 20, 2018. Getty Images/Mark Makela

In another case of murder-suicide in California last week, a man fatally shot two elderly men before killing himself at a home in Studio City, Los Angeles. Authorities said that they arrived at the scene after receiving a report of gunshots being fired. The responding officers found three people lying in a pool of blood with gunshot wounds.

“The investigation ultimately revealed that 47-year-old Phana Subpramoon had armed himself with a shotgun and shot 67-year-old Joseph Marcotte and 69-year-old Jaturong Siriprasirt multiple times, killing them in their bedroom. Phana then walked to the living room and turned the weapon on himself, ending his own life,” the press release said, adding that Subpramoon and Siriprasirt were related.

In another case this month in California, a woman walked into a train’s path carrying her infant son in a suspected murder-suicide incident. Investigators said the woman, identified as 36-year-old Therese Papagayo, stepped before a commuter train carrying her 15-month-old son. Both of them were fatally struck and an autopsy ruled the woman died from “blunt force traumatic injuries.” It was revealed that the woman had a history of depression.