The suspects “became agitated and began to assault patrons” in the costume store, using both their fists and a taser, police said. One victim said he was simultaneously punched and tased by the female suspect before the fight spilled out onto the street, where unknown pedestrians tried unsuccessfully to intervene. The suspects then ran into the Park Street MBTA station, where a small crowd of onlookers had gathered outside by around 6:45 p.m.

In the first incident, which happened around 6:30 p.m., a group of four people — three males and a female — stole an “undisclosed amount” of cash from the Underground Express store near 31 Winter Street in Downtown Crossing, police said in a statement.

Boston police made three arrests in connection with two unrelated robberies in the city on Saturday.


Officers followed the suspects into the T station, and police said in the statement that two teens from Mattapan — a 15-year-old boy and 15-year-old girl — were arrested at the Downtown Crossing station. They will be arraigned at Boston Municipal Juvenile Court on charges including assault with a dangerous weapon and armed robbery at a future date not set, police said.

The victims were treated on scene for minor injuries, police said.

In the second incident, Boston police responded to a separate robbery call after a victim was threatened with a needle around 11 p.m. in the South End, according to the statement. The suspect made off with the victim’s cell phone and fled on foot toward Harrison and Massachusetts avenues, police said.

The suspect, identified by officials as 41-year-old Armando Cruz Jones of Boston, was stopped by security at Boston Medical Center after officers there heard the police broadcast and saw him running across the hospital campus holding a cell phone.

He was arrested and faces an armed robbery charge at arraignment at Boston Municipal Court. The arraignment date had not yet been set as of Sunday afternoon, a police spokesperson said.


Lucas Phillips can be reached at lucas.phillips@globe.com.