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.