SYDNEY — A flurry of loud bangs erupted early Tuesday as a swarm of heavily armed police stormed a downtown Sydney cafe where a gunman had been holding an unknown number of people hostage for more than 16 hours.

Police swooped into the Lindt Chocolat Cafe shortly after five or six hostages were seen running out of the building.

After the police moved in, one weeping woman was helped out by the officers and at least two other people were wheeled out on stretchers.

The dramatic scene unfolded shortly after the gunman was identified by local media as Iranian-born Man Haron Monis, who is facing charges including sexual assault and accessory to murder in separate cases. A police official said “you wouldn’t be wrong” in identifying the 50-year-old Monis as the gunman. Under department rules, officials do not identify themselves unless speaking at a formal news conference.

Monis has long been on officials’ radar. Last year, he was sentenced to 300 hours of community service for writing offensive letters to families of soldiers killed in Afghanistan. He was later charged with being an accessory to the murder of his ex-wife. Earlier this year, he was charged with the sexual assault of a woman in 2002. He has been out on bail on the charges.