Maoists blasted a railway station in Vizianagaram district of Andhra Pradesh late Tuesday night, the police said on Wednesday.

A group of seven Maoists, including three women, went to the Gumada Railway station of Eastern Railways and exploded it after planting gelatin sticks.

The extremists asked four railway staff on night duty to come out from the station before blasting it.

The signal system was badly damaged in the blast and traffic between Vizianagaram (Andhra Pradesh) and Orissa was disrupted following the incident, the police said.