Greek authorities say several people have been wounded after a gunman opened fire at a social security office and at a courthouse in central Athens. Police said they arrested the 89-year-old suspect near the city of Patra, some 210 kilometers (130 miles) west of the Greek capital. Police said the man was armed with a shotgun and initially opened fire at a social security office in the center Athens, wounding an employee. Police said the same man was suspected of later opening fire on the ground floor of a court building in Athens. At least three other people were wounded at the second location. The motive was unclear.