Shots fired and police are storming the coffee shop:

POLICE STORMING SYDNEY SIEGE CAFE, ABC REPORTS

EXPLOSIONS, SHOOTING AT SYDNEY SIEGE SITE: ABC TELEVISION FOOTAGE

TWO PEOPLE KILLED AS POLICE END SIEGE OF SYDNEY CAFE, CNN SAYS

GUNMAN HAS NOT BEEN SEEN LEAVING SYDNEY SIEGE BUILDING: SKY

GUNMAN SAID TO HAVE SHOT ONE OF SYDNEY HOSTAGES, CNBC SAYS

SYDNEY SIEGE IS OVER, AUSTRALIAN POLICE SAY VIA TWITTER

As Bloomberg reports,

Police stormed a cafe in Sydney where a gunman had been holding people hostage, Australian Broadcasting Corp. reports.

 Television footage showed police entering building, with gunfire flashes and noise

 Firing occurred shortly after some of the hostages exited the building