Five crude bombs were hurled in front of the National Citizen Party (NCP) office at Banglamotor in Dhaka on Monday night.
The incident occurred around 11pm.
NCP Joint Member Secretary and spokesperson Mushfiq Us Salehin said one of the five bombs did not explode.
He also said the party activists caught five persons who attempted to flee the scene on motorcycles after hurling the bombs.
The suspects were later handed over to the police.
Similar explosions were reported in front of Shah Ali Market in Mirpur around 6:50pm and near Betar Bhaban in Agargaon around 6:15pm.
Reports of bomb blasts were also received from Dhanmondi, Mohammadpur, and Mirpur areas on Monday morning.
