MUNICH — At least two people were killed, including a small child, and more than 60 were injured when a car plowed through a crowded Christmas market in eastern Germany on Friday, officials said.

The suspected driver, identified as a doctor from Saudi Arabia who lived in Germany, was detained, said Reiner Haseloff, premier of the state of Saxony-Anhalt.

The suspect acted alone, and there was no ongoing threat to the public, he said. Officials have not given more information about a possible…