Four teenagers were shot at a birthday party in Philadelphia Wednesday night.

Gunfire erupted just before 11:30 p.m. when officers responded, according to FOX 29 Philadelphia. 

The gunshot victims' ages range between 15 and 18. 

A 15-year-old girl was shot in her back and leg. A 16-year-old girl, 16-year-old boy and 18-year-old girl were all shot in their legs, Philadelphia police Chief Inspector Scott Small confirmed. 

FIVE INJURED AFTER NEARLY 100 SHOTS FIRED NEAR PHILADELPHIA PLAYGROUND, POLICE SAY

Scene where four teens shot at Philadelphia party

Scene outside of Philadelphia home where four teenagers were shot during a birthday party. (FOX 29 Philadelphia)

The shooting happened inside a private residence. 

"There was a birthday party for a 17-year-old inside of that property and we believe there were about 15 to 20 teenagers and young adults inside of the property," Small said. 

PHILADELPHIA POLICE SAY 6-YEAR-OLD BOY GRAZED BY BULLET WHILE IN BACK SEAT OF CAR

Philly birthday party scene

Birthday banners on Bonsall Street home in North Philadelphia where girl will remember her 17th birthday party due to shooting. (FOX 29 Philadelphia)

A child as young as 11 years old was also reported to be inside the home. 

Police quickly arrived on the scene and arrested three teen boys running out of the party with at least two guns on them, FOX 29's Steve Keeley tweeted. Two bullets also reportedly went into a house across the street.

CLICK HERE TO GET THE FOX NEWS APP

The night prior five young people were hurt when nearly 100 shots were fired near a playground in Philadelphia. Police have not established a connection between the two incidents.

Police continue investigating the shooting.