Officials in Norristown arrested two teenagers they say have ties to a gang in connection with the killing of 19-year-old Hamid Boyd.

The Montgomery County District Attorney's Office announced 18-year-old Mark Fields and a 17-year-old from Philadelphia are both facing charges that include first-degree murder after a deadly shooting in November. 

Police are still looking for 20-year-old Ziyker Washington, who's wanted on charges that also include first-degree murder.

On Sunday, Nov. 30, Norristown Police officers found Boyd shot multiple times near Powell and Spruce Streets just after 6 p.m., officials said. He later died at a nearby hospital. 

Detectives recovered 45 fired cartridge casings from the scene.

Through their investigation, officials said they were able to connect Boyd to the "The Ave" gang while also connecting Fields, Washington and the 17-year-old to a rival gang called "1200."

The district attorney's office and police used surveillance video and interviews to find out that Fields, Washington and the 17-year-old were all together at an apartment on Johnson Highway before the shooting. 

Washington used his girlfriend's white Chevrolet Cruze to drive Fields and the 17-year-old to where the shooting happened, according to officials.

Surveillance cameras in the area picked up the trio getting into the car and driving off before returning to the apartment on Johnson Highway. A few days later, the car was found in King of Prussia. 

The investigation also found a post on social media that showed Washington holding up a gun in the air with Fields and the 17-year-old in it. The post also included a message about the "The Ave" gang.

After the shooting, Washington's social media account was taken down or renamed, according to officials. 

The DA's office said Fields was arrested on Dec. 12 and is being held at the Montgomery County Correctional Facility without bail. His preliminary hearing is set for Jan. 23.

The 17-year-old was arrested on Dec. 16 in Newark, New Jersey and is being extradited to Montgomery County, according to officials. 

As police continue to search for Washington, officials warn he's considered armed and dangerous. Anyone with information on his whereabouts is asked to contact the Norristown Police Department at 610-270-0977 or Montgomery County Detectives at 610-278-3386.