Gazipur City Councillor Md Badal Mia spotted the bodies this morning at Sattarnagar area of Tongi township, said Tongi police's Sub-Inspector Zahirul Islam.
"The bodies were pulled out. They bore injuries inflicted by sharp weapons. It seems they were murdered sometime during Saturday night," he was quoted as saying by bdnews24.Com.
Quoting the victims' families, Mia said that around 12:30 am some men called Sharif out of his home.
"Jumman was picked up as he was witness to Sharif being whisked away," he added.
The country has been reeling under a series of brutal high-profile assaults in recent weeks including systematic attacks especially targeting minorities, secular bloggers, intellectuals and foreigners.