A city doctor who advertised on OLX — an online portal to buy/sell goods — he wanted to sell his motorcycle lost the two-wheeler when a person fled with it on the pretext of going for a test ride, police said.

Investigations have shown the SIM card this person had used to call the doctor in Jadavpur belongs to a rickshaw-puller in Dum Dum, the police said.

The rickshaw-puller has told cops that his SIM card had been stolen by one of his passengers a few weeks ago when that person had taken his phone to make a call during the ride.

The SIM card is currently inserted in a phone that belongs to a youth in Bongaon. This phone had been used to make the call to the doctor.

But the police have found that the Bongaon resident’s phone had been stolen a few weeks ago.

Cops, though, managed to track down the suspected bike thief when he used the stolen SIM card in his phone. That gave him away, the police said.

“The man has cunningly used stolen things to commit the crime… he thought he had not left any trail. But the police got a copy of his photograph he had used as his profile picture on WhatsApp,” an officer in Lalbazar said.

“The doctor and the rickshaw-puller saw the photograph and confirmed his identity. He has been identified as Gauranga Kirtaniya. He was arrested earlier this week from his Hridaypur home in Barasat.”

The motorcycle has been seized.

There are two cases registered against him: one by the doctor whose two-wheeler was stolen and the other by the other by the Bongaon resident whose phone had been stolen.

Kirtaniya has been booked for criminal breach of trust, cheating, theft and criminal conspiracy. He has been remanded in police custody till November 13.