Rajshahi city witnessed cocktail explosions at two separate locations on Tuesday night.
The first incident occurred at 9:30 pm, when two cocktails were exploded in front of Rajshahi Nagar Bhaban.
Witnesses said that the first explosion happened near the main gate of the building, followed by another ten minutes later at the same spot.
Another incident occurred near Darikharbona Mor area when miscreants threw cocktail at the rail line, said witnesses.
Jubo League members chased the perpetrators and informed Boalia Police Station about the incident, police said.
The officer-in-charge of Boalia Police Station confirmed the incidents, and said that no arrests have been made yet.
No casualties were reported in any of the incidents.