NCRI - protest in front of the municipality building in District 4 of Ahwaz, south-west Iran, demanding the release of their recently-detained colleagues.
During the protest, which was held on Wednesday, the workers claimed that no news has yet been released about the current condition of the detained workers.
One protester said: "After a one-day temporary detention at the police station, the detained workers were transferred to Sepidar Prison in Ahwaz on Tuesday (June 14)."