India, March 21 -- The fire that engulfed a minibus carrying employees of graphic design firm Vyoma Graphics in Hinjewadi on Wednesday morning, killing four and injuring five others, was not an accident but a planned act of revenge by the vehicle's driver, Hinjewadi police said on Thursday.

By evening, the police had initiated the process of filing a first information report (FIR) and securing the driver's arrest.

The incident occurred around 7.30 am when the bus was carrying 14 employees on their way to the office for the first shift. According to Vishal Gaikwad, deputy commissioner of police (DCP), the 52-year-old accused driver, Janardan Humbardekar, had deliberately set the bus on fire due to work-related grievances, including const...