NEW DELHI - Five passengers on board an Indigo airline bus at Delhi airport were injured after a window on the bus shattered due to the impact of a jet blast, allegedly from a taxiing SpiceJet plane, Indian media reported on Saturday (July 8).

The incident took place at the Indira Gandhi International Airport at 4.50pm local time on Friday, the NDTV news website reported.

Jet blast refers to the force of hot air produced by the jet engines of aircraft during or before takeoff.

In a statement, the low-cost Indian airline said the right front window of its bus was broken from the impact of the jet blast from the SpiceJet plane which was taxiing to park at its allocated bay after landing.

"IndiGo Coach number 34 was parked at Bay 17 today at 16:50 hours for boarding of passengers on flight 6E-191 enroute Delhi-Mumbai. At the same time, an arriving aircraft of Spicejet SG-253 took a to park at the allocated bay. The jet blast from the aircraft broke the right front window glass of the coach," IndiGo said.

The airline said that ground staff immediately alerted airport staff to the incident and the five passengers who sustained minor injuries were taken to the airport clinic.

The plane, which had been bound for Mumbai, later departed the Delhi airport after all passengers had been given assistance, the airline said.

SpiceJet, however, said it was "too early to say if the incident was caused by jet blast", The International Business Times reported.

India's aviation regulator is investigating the incident.