The deceased were aged between 28 to 30 years, said police. Narayanganj naval police sub-inspector Forkan Mia said, locals found bodies in separate places and informed the naval police.
There are wound marks on the legs and abdomen of the woman's body. However, no signs of injuries were seen on the man's body. The bodies were sent to Narayanganj general hospital morgue for autopsy. The cause of their death will be ascertained after autopsy, he added.