June 27: A Bangladeshi man doing a PhD at the National University of Juridical Sciences was arrested last night for allegedly stalking and harassing online a woman who stays in the US.

Tushar Kumar Biswas, 33, from Magura district in Bangladesh, was arrested based on a complaint the woman's father, a resident of Delhi, lodged with the cyber crime police station in Salt Lake six days ago.

A police team picked up Biswas, whose student visa had expired a few months ago, from his rented accommodation in Barrackpore.

Biswas had met the woman, originally from Delhi, on the NUJS campus several years ago while she was studying there.

The victim had spurned Biswas's alleged advances. After this, since 2008, Biswas had allegedly started stalking and threatening her on Facebook and other social networking platforms.

"The woman requested him several times to stop but the pleas fell on deaf ears," an officer of the cyber crime police station said.

"Biswas would regularly send the woman indecent messages on Facebook Messenger despite several requests not to do so. We started a case and arrested him within a week of the complaint being lodged," said Santosh Pandey, deputy commissioner, detective department, Bidhannagar commissionerate.

Biswas has been barred from entering the NUJS campus since he was suspended two years for allegedly harassing another female student, the officer said.

Another officer said Biswas had created a fake profile of the US resident by using her photographs without her consent.

"We have found that his visa had expired a few months ago. He told us he had returned from Germany where he went to study eight months ago and forgot to apply for renewal of the visa," said Bidit Mondal, the inspector-in-charge of the cyber crime police station.