Mourners are laying flowers near the scene of the deadly Christmas market attack as investigators puzzle over the motive of the suspect.

A 50-year-old residing in Germany is under investigation for a car-ramming incident in Magdeburg that resulted in five deaths. The suspect, known as Taleb A., lived quietly in Bernburg and worked at a rehabilitation clinic.

Germany searched for answers on Monday on possible security lapses after a man drove his car into a Christmas market, killing at least five people and casting a renewed spotlight on security and immigration ahead of a snap election.