Europe

The Latest: Police search asylum shelter in Berlin

  • German Chancellor Angela Merkel arrives for a statement at the chancellery in Berlin, Germany, Tuesday, Dec. 20, 2016 the day after a truck ran into a crowded Christmas market and killed several people. (AP Photo/Michael Sohn)

    German Chancellor Angela Merkel arrives for a statement at the chancellery in Berlin, Germany, Tuesday, Dec. 20, 2016 the day after a truck ran into a crowded Christmas market and killed several people. (AP Photo/Michael Sohn)  (The Associated Press)

  • A trail of devastation is left behind in Berlin, Germany, Tuesday, Dec. 20, 2016, the day after a truck ran into a crowded Christmas market and killed several people. (AP Photo/Markus Schreiber)

    A trail of devastation is left behind in Berlin, Germany, Tuesday, Dec. 20, 2016, the day after a truck ran into a crowded Christmas market and killed several people. (AP Photo/Markus Schreiber)  (The Associated Press)

  • Candles burn near the crime scene in Berlin, Germany, Tuesday, Dec. 20, 2016, the day after a truck ran into a crowded Christmas market and killed several people. (AP Photo/Matthias Schrader)

    Candles burn near the crime scene in Berlin, Germany, Tuesday, Dec. 20, 2016, the day after a truck ran into a crowded Christmas market and killed several people. (AP Photo/Matthias Schrader)  (The Associated Press)

The Latest on investigation of truck rampage in Berlin Christmas market (all times local):

8:25 a.m.

German police have searched a large shelter for asylum-seekers in Berlin in response to the fatal attack on Christmas market Monday.

The dpa news agency reported Tuesday that up to 250 officers took part in the operation at the now-defunct Tempelhof airport overnight.

It quoted a spokesman for Berlin's office for refugee affairs, Sascha Langenbach, saying four men in the late 20s were questioned by police but nobody was arrested.

Several German media, citing unnamed security sources, reported that the suspect in the attack was a Pakistani man who entered Germany late 2015 or early this year.

Police declined to comment on the reports, referring questions to federal prosecutors who didn't immediately respond to calls Tuesday.

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Germany's top security official is ordering flags at federal buildings to be flown at half-staff in the wake of Monday's truck attack in Berlin.

Interior Minister Thomas de Maiziere said in a statement Tuesday that the decision was taken as a mark of sympathy following the attack.

Authorities say at least 12 people were killed and almost 50 injured when a heavily laden truck slammed into a Christmas market in the west of the German capital.

8:10 a.m.

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Associated Press writer Frank Jordan in Berlin contributed.