Police began an investigation Monday into a head-on collision between two trains on a single-line railway Sunday in which 25 people were injured, police officials said.

Police start an investigation into a head-on collision on a single-line railway in which 25 people were injured.

Investigators inspected the signals, brake marks and radio equipment on the section of track where the collision between two single-car trains occurred on the Echizen Line, operated by Keifuku Electric Railroad Co. in Fukui Prefecture.

Police said they will also continue questioning passengers and railway officials about the accident. , the second serious one involving the carrier in the past seven months.

Following instructions from the transport ministry, the railway suspended train runs on its three lines in the prefecture and provided bus services for passengers. , company officials said.