A seven-year-old schoolgirl was raped and strangled at Ashulia sometime between Thursday evening and early yesterday morning.
The killers wrapped the body in a sack and dumped it in a vegetables garden near her house in Badail.
Local people found the body of Ema, daughter of tea vendor Imam Hossain, at around 6:30am yesterday and then informed the police who sent it to Dhaka Medical College morgue.
The police picked up two people for interrogation. One of them is Abdul Bhuiyan, a neighbour.
Morgue sources said the girl was raped before being murdered.