A road near the headquaters of Germany's Social Democratic Party is blocked by police in Berlin, capital of Germany, on May 22, 2017. (Xinhua/Shan Yuqi)

BERLIN, May 22 (Xinhua) -- German police gave all-clear at Monday noon after the headquarters of the Social Democratic Party (SPD) in Berlin were evacuated due to suspicious object.

It was a kind of self-built wooden chest that looked like a donation box, therefore the police was alarmed, German media Bavarian Radio reported.

A SPD spokeswoman said earlier that the suspicious object was being examined by the police wearing splinter protection vests as a routine precaution.

As a result, the SPD headquarters had been cleared for about 90 minutes.