A pregnant woman, wife of a Delhi Police constable, was allegedly hanged to death by her husband and in-laws over dowry demand, police said on Saturday.
Monika, wife of constable Mohit Kumar, was killed by her husband and in-laws in Etawah village on Friday.
Police have arrested the victim's father-in-law Sahiram and his wife.
An FIR has also been registered against six persons in this regard.
Victim's father Omsingh in his complaint had alleged that Monika's in-laws were demanding dowry for a long time.
Monika and Mohit were married last year in February.