The German police have release CCTV video of the man who threw a bomb at the Germany Gurdwara Sahib in the city of Essen. The police formed a special committee to investigate the attack and managed to obtain CCTV images of the man.
Police are seeking help of the public to find this man wearing a backpack.
The picture shows the man running after throwing the bomb inside the Gurdwara
The following picture shows the man without a mask.

Another picture of the man without a mask
The following picture shows the man without the backpack. At this point the backpack was thrown inside the Gurdwara.
The man was wearing a Russell backpack.