Authorities are still searching for Kaiseem Smith in connection with the killing.

PHILADELPHIA (WPVI) -- One of the teens wanted in the killing of Penn State student Billy Schmidt has been arrested in Colorado, according to Philadelphia police.
Deputy Commissioner Frank Vanore announced on Wednesday night that 16-year-old Azzubair Outen-Fleming was arrested in Colorado.
Police are still searching for a second suspect, identified as 16-year-old Kaiseem Smith.
Authorities allege the suspects stole Schmidt's cellphone on the 1900 block of Durfor Street on June 6. As Schmidt chased after the suspects, one of them turned and shot the Penn State senior in the chest.
Schmidt was pronounced dead a short time later.
Both teens are facing murder charges.
The U.S. Marshals Service announced Wednesday that it was offering up to $10,000 in reward money: a $5,000 reward for the arrest of Kaiseem Smith, and another $5,000 for the arrest of Azzubair Outen-Fleming.
That is on top of a $20,000 reward offered by the Philadelphia Police Department for an arrest and conviction in this case.

Officials describe Smith as being 4 feet, 10 inches tall, weighing roughly 110 lbs. He is a resident of Wilmington, Delaware, but is known to frequent the 27th and Reed area of Philadelphia.

"Surrender now. If you choose to remain fugitives, the Marshals Service will relentlessly pursue every lead, every associate, and every tip until you are located and taken into custody," said Supervisory Deputy U.S. Marshal Robert Clark.
READ MORE | Suspect's stepfather arrested as search continues for teens in PSU student's murder
U.S. Marshals have already arrested Outen-Fleming's stepfather, 35-year-old Dante Abdul Malik. He faces charges including hindering apprehension and tampering with evidence in connection with the case.
The 22-year-old Penn State senior was gunned down just yards from his family's home around 1:30 a.m.
Philadelphia District Attorney Larry Krasner said investigators believe Smith was the gunman.
"The information that we have seems to indicate Kaiseem Smith is the shooter in this case," said Krasner.
Family members said Schmidt had been returning from a nearby bar where he had been watching an NBA Finals game with friends.
Earlier this month, police released video of the wanted suspects.

Anyone with information is asked to call 215-686-TIPS. Tips can also be called in to the U.S. Marshals Philadelphia Tipline at 1-866-865-TIPS(8477) or at www.usmarshals.gov.