SAN DIEGO — A 24-hour taco shop in Normal Heights and an Oak Park- area gas station were robbed at gunpoint Tuesday morning, and investigators were working to determine whether the two crimes were carried out by the same two criminals.

The first of the robberies was reported at Rolberto’s Taco Shop on Adams Avenue near Mansfield Street shortly after 4 a.m. The two robbers got away with an undisclosed amount of money before police arrived.

The suspects were described as masked men, one of whom was armed with a gun and wearing a tan flannel shirt and dark pants. The other was wearing a dark sweater, according to the officer.

About 35 minutes later, a gun-wielding man and an apparently unarmed accomplice held up an am/pm convenience store at an Arco gas station at the corner of Euclid Avenue and Westover Place, Lasher said.

One of the robbers was described as about 5 feet 2 with a medium build. He was armed with a gun and was wearing a leather jacket.

A description of the second suspect in the most recent robbery was not immediately available.