Pro-Russian rebels in Slaviansk say Ukraine tries to retake town, gunfire heard

SLAVIANSK, Ukraine Thu May 1, 2014 11:41pm EDT

SLAVIANSK, Ukraine May 2 (Reuters) - Pro-Russian separatists in Slaviansk in eastern Ukraine said on Friday Ukrainian forces had launched a "large-scale operation" to retake the town.

A Reuters photographer said he saw a military helicopter open fire on the outskirts of the town and a reporter heard gunfire. The Ukrainian authorities could not immediately be reached for comment. (Reporting by Maria Tsvetkova; Writing by Elizabeth Piper; Editing by Paul Tait)