Authorities in Philadelphia are reporting that they were able to locate a missing teen by tracking the teen’s cellphone.

The incident was reported around 11:30 p.m. on Sunday in the basement of a home in Northeast Philadelphia, Pennsylvania.

Officers say the teen’s family contacted them after hearing a commotion coming from the basement where the teen normally resides. When they went to check out the area, they did not find the teen but did notice signs of a struggle.

The family also expressed concerns because despite not hearing a gun go off during the struggle, they did find a bullet hole in the wall.

While investigating the scene, authorities discovered blood and three bullets in the vicinity outside the house.

Police were eventually able to pinpoint the teen’s location by using cellphone tracking technology and sent the SWAT to the location to began negotiations.

“We were able to track the 17-year-old’s cellphone to a property in the 6200 block of Trotter Street,” Philadelphia Police Chief Inspector Scott Small told WPVI. “When police went to that location, they declared it a barricade since we believed that this was an abduction point of gun.”

Authorities say a male and two females in their 20’s held the teen hostage at a home but were eventually convinced to exit property.

Once the suspects were out of the residents, authorities went inside to find the teen badly beaten and floating in and out of consciousness.

He was taken to area hospital where he was treated for his injuries and later released.

All three suspects were identified and taken into custody.

Investigators told reporters that the teen knew at least one, if not all of his kidnappers but it is unclear why the incident took place.