In Charlestown, one man arrested and three guns seized, then second man arrested after police say he tried to stop the first guy's arrest

Boston Police report gang-unit officers on patrol in the Bunker Hill development last night arrested a Dorchester man they say was carrying a loaded, high-capacity weapon, found two more loaded guns nearby and then had to deal with an angry crowd that objected loudly.

Police say a South Boston man in particular tried causing trouble and was himself arrested after refusing orders to leave.

According to police, the events unfolded around 7:30 p.m. outside 18 O'Meara Court, when the officers noticed Arthur Flood, 18, of Dorchester, acting suspciously as they drove by:

Upon seeing the officers, Flood quickly moved to the passenger side window of a parked motor vehicle, leaned inside and looked as though he was retrieving or concealing something while speaking with an individual who was seated in the drivers seat. As the officers approached, Flood turned his body away from the officers, shielding his right side from the officers view. As the the officers conversed with him, he continued to shield his right side and attempted to walk past the officers. The officer conducted a pat frisk to his right side, and immediately felt a hard object in the shape of a firearm. Officers attempted to secure Floods hands, but he kept moving them towards the front of his waistband area. Officers were eventually able to gain control and safely secure him in handcuffs.

Police say the officers removed "a black Taurus 9mm G2C was loaded with 1 round in the chamber and 12 rounds in a high capacity feeding device" from his left pants leg, which it was sliding down after they secured his hands.

As the officers were affecting the arrest of Flood, the large group in the parking lot began to converge on them as they tried to secure the firearm. As the group became aggressive, they were instructed to leave the area, and made aware of multiple posted No Trespassing signs. A second individual, identified as Keon Alston, 24 years old, of South Boston was placed under arrest for Trespassing after he was instructed to leave the area multiple times and continued to be uncooperative. As the officers placed Alston under arrest, he violently resisted, swung his elbows and tensed his arms refusing to place them behind his back. The group once again converged on the officers, and with the assistance of several other officers, Alston was finally placed in the rear of a patrol wagon.

As the crowd dispersed, police say, officers found two more guns, under cars parked there: a stolen Smith & Wesson .357 Magnum revolver loaded with five rounds and a Lorcin .380 L380 loaded with 1 round in the chamber and six rounds in a magazine.

Flood was charged with unlawful possession of a firearm, unlawful possession of ammunition, carrying a loaded firearm on a public way and possession of a large-capacity feeding device, police say. Alston was charged with assault and battery on a police officer, trespassing, resisting arrest and interfering with a police officer.

Innocent, etc.