Three people were killed and 10 were injured in a shooting in Philadelphia on Monday, for which one person has been arrested.

Police Commissioner Kevin Bethel said Monday that three adults were dead and two of the wounded were juveniles, The Associated Press reported. The shooting occurred just before 1 a.m. along a residential street in Grays Ferry, he added.

“We have numerous rounds that were shot on the block,” Bethel said.

One person with a weapon was arrested, according to police.

Police had previously responded to the same block late Saturday into early Sunday and made some arrests, the commissioner said.

“This is coward, want-to-be-thugs stuff,” Bethel said.

It is not yet known what led to the shooting.