Two people, including a 16-year-old, were killed in a shootout in an apparent “transaction” gone wrong in Germantown on Tuesday night, Philadelphia police said.

According to police, the shootout occurred at the 500 block of West Queen Lane at around 5:12 p.m. after some sort of transaction went horribly wrong.

“We’re not certain what the transaction involved,” said Philadelphia Police Chief Inspector Scott Small. “But we believe they met here for a specific reason.”

A 30-year-old man and the teen were both found suffering from multiple gunshot wounds at the scene, police said.

Both were taken to the hospital, where the adult was pronounced dead at 5:30 p.m. and the teen was pronounced dead at 5:42 p.m., police said.

SkyForce10 flew over the scene to find a silver Nissan, which is believed to have been driven by the 30-year-old, who had another passenger with him.

Surveillance video obtained by NBC10 shows the two in the car drive up to the 16-year-old later killed and another person when, for an unknown reason, the 30-year-old gets out of the car and starts firing.

An unknown person with the 16-year-old returned fire, leading to the 30-year-old man getting shot multiple times, the video showed.

The video also showed the shooter fire two more rounds at the 30-year-old after he fell to the ground.

The video does not appear to show exactly when the 16-year-old got shot.

The shooter of the 30-year-old is still sought by police. No details about the fourth person involved were immediately available.

“At the hospital, we recovered a semi-automatic handgun from the 30-year-old victim who died. We did not recover a second handgun,” said Philadelphia Police Chief Inspector Scott Small.

Cornelio Mezquita, the owner of the Queen Lane Mini Market, which is adjacent to the shooting location, said the incident is a shock to him.

“I’ve been here for 21 years and never happened in this area,” he said. “A very, very quiet area. It’s really sad.”

Anyone with any information on the incident is urged to contact the Philadelphia Police Department at 215-686-TIPS (8477) or anonymously online here.