NEW DELHI, Sept. 20 (Xinhua) — Authorities in eastern Indian state of West Bengal Tuesday halted boarding of an Air India flight and took it in isolation, following a bomb scare, officials said.

Boarding of passengers was stopped at Kolkata airport immediately after an Air India check-in counter received a telephone call claiming that there was a bomb in the flight.

The domestic flight destined for Guwahati city was took in isolation and subjected to thorough checking.

Reports said the call was made about 8:20 a.m. (local time) by a woman threatening to blow-off the plane.

"Call was received well before the boarding of passengers was scheduled to start," an official said. "Security immediately swung into action and took the plane in isolation."

According to local media reports bomb detection and disposal squad were inspecting the plane until last reports poured in.