Several people were injured when a shooter opened fire at a social security office and a court in Greece on Tuesday.Police have launched a manhunt to locate the suspect, believed to be an 89-year-old man, the Associated Press reports. A man armed with a gun first opened fire inside a Social Security office in central Athens, wounding an employee, authorities said.He then said the same suspect later opened fire on the ground floor of a court building in the city, injuring several people. The motive behind the attacks is unclear. Local broadcaster ERT reported that after the shooting at the court, the gunman threw envelopes filled with documents on the floor, claiming they could explain the reasons for his actions.