Berlin, Germany (CNN) -- The death toll from a weekend bus crash near Berlin rose to 13, police said Monday.
The collision occurred Sunday on the A10 in Brandenburg when the bus tried to avoid a vehicle coming onto the motorway, police spokesman Jens Quitske said. The bus lost control and collided with the column of a bridge.
In addition to the 13 killed, at least 29 others were injured, 17 of them severely. Among those severely injured was the driver of the other vehicle.
The bus was a Polish holiday bus making its way from Spain back to Poland, Quitske said. He could not confirm whether all those on board were Polish.
"I was shocked to hear of the tragic bus accident near Berlin in which so many Polish nationals lost their lives," German Foreign Minister Guido Westerwelle said Sunday. "This accident doesn't just concern our Polish friends, it also affects us. Our deepest sympathies and condolences go out to the family and friends of those who died."
Polish Prime Minister Donald Tusk visited a hospital in Berlin on Sunday where three of the injured were receiving treatment, said Kinga Wustinger, a spokeswoman for the Polish embassy.
CNN's Diana Magnay contributed to this report.