April 28 (UPI) -- Police in Greece arrested an 89-year-old man suspected of shooting and injuring five people at two government sites in Athens on Tuesday, local authorities said. Law enforcement said the man opened fire at a courthouse in central Athens and a social security office. The shooting injured an employee at the social security office and four others at the courthouse, the BBC reported . One eyewitness told state-run news agency ANA they observed the man firing his gun at the ground.