PHILADELPHIA (CBS) — The ripple effects from a deadly truck attack in Germany are being felt in Philadelphia on Monday night.

Police are stepping up security details at the Christmas Village at City Hall in wake of the incident at a Berlin Christmas market where a truck plowed into a crowd of people, killing at least nine and injuring another 50.

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“We’ve increased our patrol over there. In terms with this type of incident happening, you have to be mindful of it. We can’t be naïve and act like it didn’t happen,” said Philadelphia Police Lt. John Stanford. “But in the same sense, we don’t want to create unnecessary panic, but in the same sense we do have increased presence over in that area.”

9 Dead, At Least 50 Injured After Truck Plows Into Berlin Christmas Market

Honorary German Consul Ralf Wiedemann said Christmas markets throughout Germany are a “festive time,” as many people go there to shop and eat.

“I know people who live in Berlin and at this time we are uncertain as to what exactly happened and who is involved and who the victims are,” said Wiedemann. “It’s very distressing for me personally.”

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German authorities said the driver was arrested at the scene, while a passenger in the truck died.

A German intelligence official told CNN the crash is being investigated as an act of terrorism.

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Several people in the U.S. intelligence community told CBS News this incident has all the hallmarks of a terror attack and that it bears similarities to the recent terror attack in Nice, France.

CBS News reports police in Germany have recently detained several people for planning attacks on Christmas markets, including a 12-year-old Iraqi boy who attempted to set off a nail bomb in one of them.

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Police in Philadelphia sid there’s always a security presence at all of the Christmas venues in the city and that will continue to be the case. They are also saying people should be vigilant about their own safety and if they see something, say something.