Court records show that Patrick Scott was arrested and is still in custody, awaiting his first appearance in federal court. Scott is now charged with illegally possessing a machine gun and unlawful receipt of a firearm and ammunition.
Records show that the suspect was out on bond at the time of the shooting for aggravated robbery and was prohibited from having a weapon in his possession.
SEE ALSO: METRO murder suspect 'being uncooperative,' according to court officials
Earlier this month, Scott was on board a METRO bus and got into an argument with another suspect, Brayden Smith, before gunfire rang out.
The Houston Police Department said that a 16-year-old was injured, and a woman, identified as 25-year-old Caitlin Stup, was shot in the head. HPD said she was rushed to the hospital, but was pronounced dead. Authorities described her as an innocent bystander.
Officials later confirmed that Smith fired the shots that injured the teen and killed Stups.
Investigators said shells from a 9mm Glock with a gun conversion device or a "switch" were recovered, and it was linked to Scott.
Both suspects fled the scene, and one was seen running into a nearby apartment complex. Surveillance images were released the next day, before Smith and Scott were arrested.
SEE PREVIOUS REPORT: 2 suspects linked to bus shooting that killed a woman taken into custody and charged, METRO says
2 suspects linked to bus shooting that killed a woman taken into custody and charged, METRO says
Smith, 17, was scheduled to appear in court the following Friday, but officials said he was "being uncooperative." He is currently still in custody, being held without bond.
If convicted, Scott could face up to 10 years in prison, and up to five years for receipt of a firearm and ammunition while under indictment, with both charges carrying a fine of $250,000.