A woman was shot by an assailant in the southern part of the city's Haridevpur area early on Monday, police said.
Mousumi Halder (37) was rushed to the nearby MR Bangur Hospital, and her condition is stated to be critical, they said.
The attacker, who had managed to flee, was later detained and is being questioned, a police officer said.
"The incident took place around 6.20 am on the Kalipada Mukherjee Road. The woman was hit by the bullet on her back. An investigation is underway," the officer of Haridevpur Police Station told PTI.
"Preliminary inquiry revealed that the man shot her over a personal issue," he said.
The injured woman was later shifted to the state-run SSKM Hospital, the officer added.
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