A railway engineer and four contract labourers were run over by a train Saturday when they were repairing the railway track in Bihar's Rohtas district, police said.
"Due to dense fog, they failed to see the Ajmer-Sealdah Express coming on the track and were crushed to death," police said.
The incident occurred near Kumhau station.
"Five of them died on the spot and two were seriously injured and admitted to a hospital for treatment," officials said.