A SpiceJet flight on the way to Mumbai returned to Kolkata on Wednesday morning as the crew noticed a crack on one of the windows of the plane after take-off, officials said.

The flight, SG-515, took off from the Kolkata airport at 6.17 am with 176 passengers and six crew members, they said.

Mid-air, the plane's cabin crew spotted the crack. They immediately informed the pilot who soon contacted the air traffic control of the Kolkata airport, and asked for permission to land, officials said.

The plane landed safely around 7.45 am, they said.

The incident triggered a panic among the passengers.

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