East Japan Railway Co. said Monday it will fully resume services on the Tohoku Shinkansen Line between Tokyo and Shin-Aomori stations by late April.

The operations between Nasu-Shiobara and Morioka stations were suspended after the March 11 earthquake, but JR East will reopen the route step by step after completing repairs, it said.

The operator found that train tracks and elevated bridges were damaged in about 1,200 locations but has managed to repair about 45 percent of them so far, it said.

Bullet trains are running on a partial basis between Morioka and Shin-Aomori stations as well as between Tokyo and Nasu-Shiobara.