Two Mattapan men were ordered held in lieu of $200,000 bail each at their arraignment Tuesday on charges they resorted to gunfire when barred from a party on Evans Street late Saturday night, the Suffolk County District Attorney's office reports.

Christopher Ajene, 22, and Gerald Urby Jr., 30, faced a variety of gun related charges at their arraignment in Dorchester District Court - all of which could result in stiffer than normal penalties because both are also considered armed career criminals.

The charges against both include unlawful possession of a firearm, unlawful possession of ammunition as a subsequent offense, carrying a loaded firearm without a license and discharging a firearm within 500 feet of a building.

Judge James Coffey ordered Urby held without bail pending a hearing on whether his arrest violates his probation for a 2010 drug conviction.

According to prosecutors, after being told they were not welcome at the party, Ajene pulled out a gun and fired it repeatedly. There were no injuries.

The two then got into a gold Chrysler and sped away, the DA's office says, adding:

"Officers quickly spotted the vehicle nearby at the intersection of Morton and Norfolk streets. Once police changed direction in order to follow the vehicle, the driver, later identified as Urby, sped up to approximately 50 miles per hour and began weaving across lanes, forcing other vehicles to swerve to avoid a collision, prosecutors said.

"The vehicle took an abrupt left turn onto Mildred Avenue. Rather than making a similarly abrupt turn through oncoming traffic, police took the next left turn and were able to catch up to the defendants, prosecutors said. The defendants pulled onto Duxbury Road – a dead end street – and were apprehended after attempting to escape on foot, according to prosecutors.

"A search of the path of flight revealed a Ruger .380 semiautomatic handgun on Mildred Avenue."