Rapid Action Battalion (RAB) recovered 41 crude bombs from an abandoned house in Shibganj Upazila of Chapainawabganj on Friday night.
Lt Col Md Munim Ferdous, commander of the RAB-5 in Rajshahi, confirmed the matter at a press briefing on Saturday morning.
He said being tipped off, a RAB team recovered the crude bombs from the house in Lavanga Sundorpur area under Nayalabanga Union of the upazila at around 8 pm on Friday but no one was arrested in this connection.
Later on, the bombs were deactivated in a mango orchard, said the RAB official.
Drives being conducted to arrest those involved in this connection, the official added.