The German federal government announced on Wednesday that it would compensate for half the damaged property on the sidelines of the past G20 summit in northern German city of Hamburg.

"The goal is to provide speedy help to the victims of the violence in their effort to repair the damage," the Federal Ministry of Finance was cited as saying by German news agency dpa.

According to the ministry, the federal government is working with officials in Hamburg to reach an agreement on the relief fund.

German Chancellor Angela Merkel had promised help and compensation. She said that it is not a question whether to help, but how to help.

However, the federal government could not say how much would have to be paid for damaged property.

Hamburg Mayor Olaf Scholz on Wednesday also apologized that the security measures imposed were inadequate in terms of protecting residents.

Windows were smashed and cars set ablaze at various locations throughout the city, injuring more than 200 police officers, during the Hamburg summit.