Afsana along with her lover Naseem, a resident of New Mustfabad, suffocated her husband, Akhbar, to death on the night of July 15 after he came drunk home and picked up a fight, police said.
The decomposed body of Akhbar was found wrapped in a bedsheet in Balaram colony on July 22 and the trio was arrested by the Loni police last evening.
Akhbar's brother had registered a case of murder at Loni police station.
"The trio suffocated Akhbar to death and dumped his body at an isolated place in Balram colony," said a senior police officer.
Afsana, a mother of two daughters, got married to Akhbar 14 years ago.