Deonte Kelly, 23, of Philadelphia, surrendered to police in Pottstown at around 6:30 p.m. on Tuesday, Oct. 25, said Montgomery County District Attorney Kevin R. Steele in a statement.
Investigators believe Kelly acted with 17-year-old Dominic Carboni in the Monday, Oct. 17 shootings of Skyler Fox, 17, and Brandon Bacote-Byer, 18, in Pottstown.
DA Steele has described the murders as a drug deal gone wrong.
After Carboni's arrest last week, authorities named Kelly as the second suspect in the slayings and offered a $5,000 reward for information that led to his capture.
Kelly is being held without bail at the Montgomery County Correctional Facility and will be arraigned in coming days, officials added.
Click here to follow Daily Voice West Chester and receive free news updates.