Two persons on a motorcycle were injured on Wednesday in a road accident on 'Maa' flyover in the metropolis, police said.
The accident took place around 8.30 am when the bike rider lost control of the vehicle and hit a railing, he said.
"The impact was such that the pillion rider flew off the flyover and fell on the road. He is being treated at the SSKM Hospital and his condition is critical," a senior police officer told PTI.
The other person suffered minor injuries and was administered first-aid, he said.
Police will go through the CCTV footage to find out the exact cause of the accident, the officer said.
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