This video shows the horrifying moment a gunman in Munich near a McDonald's started shooting

Munich police say the suspects are still on the run.

A gunman in Munich Friday in the Olympia Einkaufszentrum shopping center opened up fire on a crowd of people. The details so far a few, but it is being reported that several are dead and injured.

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Munich police are urging residents to stay home or seek safety indoors as they hunt for a shooter or shooters who attacked people at a mall.

In a statement, Munich police say "the suspects are still on the run. Please avoid public places." They urge people not to post tweets or post photos of police operations in the city.

Munich public transit operator MVG says all subway, bus and trolley cars have been shut down because of the police operation until further notice.

The shooter has not been caught, but the authorities suspect he did not act alone.

It's the second attack in Germany in less than a week. On Monday, a 17-year-old Afghan wounded four people in an ax-and-knife attack on a regional train near the Bavarian city of Wuerzburg, and attacked another woman outside as he fled. All survived, although one man from the train remains in life-threatening condition. The attacker was shot and killed by police.

The Islamic State group claimed responsibility for the train attack.

The Associated Press contributed to this report.