Religious guru Asaram Bapu and four others had a miraculous escape when their helicopter crashed just ahead of landing at a local college here on Wednesday, police said.
Soon after the accident, the country's civil aviation regulator ordered a probe and rushed a team of investigators to the spot, they said.
They sustained minor injuries in the incident, police said.
"The chartered helicopter Asaram Bapu and his followers were travelling in developed a technical snag prior to landing at Godhra Science college and fell from a considerable height," police officials said.
It fell on the ground after losing balance and the impact was so powerful that it lay tilted on the ground, they said.
Bapu and the pilot had to be taken out after breaking the glass. They were rushed for treatment to a nearby Ashram hospital, officials said.
Asaram Bapu was to address a two-day religious gathering organised at the college grounds.
Meanwhile, the Directorate General of Civil Aviation has rushed its team to investigate the crash-landing.
"We have dispatched a team from Mumbai, which will travel to Godhra to look into the reasons behind the crash-landing," an official from the regulator told IANS in New Delhi.
"The team will look into all aspects of the crash. No