Rangpur, Aug. 30 -- The father and elder brother of Siddhartha Das, one of the two suspects arrested in connection with the killings of four members of a family, including former schoolteacher Ganapati Chakraborty, have been released after being questioned by the Detective Branch (DB) of police.

They were released from the DB office on Central Road around 11:30pm on Saturday after signing written undertakings, police said.

Rangpur killings: Accused Siddhartha's father, brother taken to DB custody for questioning

Siddhartha's father Binoy Das and elder brother Partha Das were taken into DB custody for questioning earlier on Saturday afternoon.

Deputy Commissioner of Rangpur Metropolitan Police Sonaton Chakroborty said they were brought...