Memorial Day mass shooting leaves 2 dead, 9 injured in Philadelphia park

Two people are dead and nine others were wounded after a mass shooting in Philadelphia's Fairmount Park late Monday night.

The victims killed include an adult man and an adult woman. They have been identified as 23-year-old Amya Devlin and 21-year-old Mikhail Bowers.

The victims who were wounded range in age from 15 to 28 years old, all of whom are in stable condition at area hospitals.

The gunfire erupted around 10:27 p.m. Monday.

Mayor Cherelle Parker said during a news conference on Tuesday that there are believed to be three shooters involved.

No one is in custody, Police Commissioner Kevin Bethel said.

Bethel said Tuesday that investigators are confident that at least one of the weapons used in the shooting had a device known as a 'switch' on it, which allows a semiautomatic weapon to become fully automatic.

"We will not be held hostage by anyone who decides that they want to get assault-like, war-like weaponry... guns with switches," Parker said.

Bethel says there are usually a lot of people in the park when it gets warm, especially on a holiday, and that officers were managing crowds all over the city.

The shooting occurred despite officers' presence in the park, Bethel said.

Police are also looking into how a crashed Hyundai was involved and whether any victims were inside.

They're also going to be looking into reports of 911 calls earlier in the night about disturbances around the park.

The area of Fairmount Park where the shooting happened is a popular spot for cookouts.

Police released the following details about the victims who were wounded:

-15-year-old boy shot in the thigh

-16-year-old girl shot in the thigh

-17-year-old girl shot in the leg

-18-year-old woman shot in the foot

-19-year-old woman shot in the head

-19-year-old woman shot in the hand

-20-year-old man shot in the arm

-23-year-old woman shot in the nose

-28-year-old man shot in the arm