Eyewitness video showed police with shields on Friday (March 3) in Athens, as people protested a devastating train crash that killed at least 57, Reuters reports.
Carriages were thrown off the tracks, crushed and engulfed in flames when a high-speed passenger train with more than 350 people on board collided head-on with a freight train late on Tuesday (February 28).
Work resumed at the crash site, where rescue staff used cranes to lift some of the carriages that were thrown off the tracks - which could be wrapped up on Friday.
Amid shock and sorrow in a country where three days of national mourning have been declared, families and friends said they wanted answers over how such a crash could have happened.
After evening protests over the past two days, two more protest rallies are planned in Athens on Friday, around noon and in the evening.