Two teenage Philadelphia boys have been charged as adults for their involvement in a shooting that left 16-year-old boy critically wounded with a gunshot to the head.

The two boys, 17 and 16, face a number of charges that could be upgraded if their victim dies.

The shooting took place Thursday night on a transit platform in Center City Philadelphia, according to SEPTA police. Investigators said the 17-year-old took a train from North Philadelphia to the 15th Street station, where he met up with the second suspect. Shortly afterward, the 17-year-old fired into a crowd on the platform, striking the other 16-year-old in the head and sending other passengers running.

Chief of SEPTA Transit Police Charles Lawson told WPVI there were three transit officers visible on the platform at the time of the shooting. Investigators found six shell casings on the platform.

The Philadelphia District Attorney’s Office approved charging the two teens as adults on Friday. The 17-year-old has been charged with aggravated assult, reckless, endangerment, evading arrest, and other charges. The younger suspect was charged with aggravated assault, simple assault, and recklessly endangering another person.

Lawson said that investigators did not see an interactions between the shooter and his accomplice and the victim, WTXF said.

“This could be anything at this point, it could be something that stemmed from neighborhood beef, we just don’t know,” he said.

The victim was a 10th grade student at Frankford High School, according to KYW.

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