Unidentified miscreants hurled a crude bomb at a polling centre in Jashore-3 constituency.
The incident happened at 7:15 am this morning at Shankarpur Secondary School polling centre in the constituency.
Assistant Platoon Commander of Bangladesh Ansar, Maruf Hossain, who was in charge of the polling centre security, was injured in the explosion.
Other law enforcers took him to Jashore General Hospital for treatment.
As per eyewitnesses, Maruf stood on the first-floor balcony of the school when unidentified miscreants approached from the school's east side, hurled a crude bomb, and quickly fled.
The crude bomb landed on the railing of the second floor of the school and then exploded.
On information, Kotwali Police Station and the mobile striking team of the police in charge of maintaining security during the election visited the spot and collected samples of the exploded parts of the crude bomb.
However, no one was arrested in connection with the incident.
Jashore Additional Superintendent of Police, Belal Hossain, could not be reached for comments regarding the matter.