Several armed robbers busted their way into a Financial District birthday bash and made off with thousands of dollars in cash and jewelry, police said.

Surveillance video released Tuesday shows six men getting into the Broad St. building elevator near Exchange Place.

The 20-year-old unsuspecting party host told police he heard a knock on the door just after midnight Sunday so he opened it. The armed crooks then burst in and struck the victim in the head, police said.

Police release video of suspects in the Lower Manhattan robbery of a birthday party.

The gang ransacked the living room and stole $3000 worth of clothing and jewelry, police said. No one was seriously injured in the robbery.

Anyone with information is asked to call Crime Stoppers at (800) 577-TIPS.