The CBI officials on Thursday took into custody a resident of Godda for his alleged connection with the October 11 blast in Ajmer Sharif dargah, which killed three people and injured 20 others.

Khushwar Rahman, 37, who teaches mathematics at a Sadar Sahar Madrasa at Churu in Rajasthan, was picked up from his house here by the Jharkhand Police and handed over to the CBI. His mobile has also been seized.

Rahman told the police that he has been teaching in the madrasa for the past five years. “He also told us that he had taken leave and come home for Id,” said Biglal Oraon, Godda SP. Rahman is expected to be taken to Jaipur on Friday.

A CBI team, meanwhile, has also visited the neighbouring Jamtara town and interrogated one Mohhamed Shahid and raided a shop, Sargam Telecom, owned by Shahid. According to sources, the CBI has seized various documents. A dozen SIM cards, which were sold on forged documents in the name of one Babulal Yadav, were also found. The agency has also carried out raids in shops in Jamtara and adjoining Mihijam in Jharkhand and Asansol and Rupnarayanpur in West Bengal. Jamtara SP Hemant Toppo said: “We hope to take our investigation to a logical conclusion soon.”