Doctors at a government hospital attacked a Samajwadi Party legislator in Kanpur after which clashes erupted between the doctors and the lawmaker's supporters, police said.
The melee began late on Friday after some problems faced by a patient were brought to legislator Irfan Solanki's notice.
When Solanki directed the doctors to act, they first attacked his gunner and then beat him up.
Solanki suffered head injuries and was whisked away by his staff. Soon, his supporters blocked the road outside the Lala Lajpat Rai hospital.
Police cane charged the protesting doctors. A battery of mediapersons were also cane charged. More than a dozen journalists sustained injuries.
Around Thirty doctors were later arrested even as tension continued till late night.
District Magistrate Roshan Jacob said a probe by a sub-divisional magistrate has been ordered.
The district police chief later apologised to the angry scribes.