Miscreants, in separate incidents, set two educational institutions in Gazipur city on fire in the early hours of Saturday.
Among the two schools, onewill be used as a polling station for the election on Sunday.
Rafiqul Islam, inspector (investigation) of Bason police station confirmed the matter.
He said miscreants set fire to TNT Ideal High School at Telipara around 2:45am.
On information, two firefighting units rushed to the spot and doused the blaze.
Nine classrooms, the office, and educational materials were burnt in the fire.
Meanwhile, a group of miscreants set fire to East Chandana Government Primary School in the Bason area of the city around 1:30am which will be used as a polling station.
On information, a firefighting unit rushed to the spot and extinguished the blaze.
The portion of the polling station gutted in the fire.
Kaliakoir Upazila Nirbahi Officer (UNO) Hossain Mohammad Hye Joki said that law enforcers and firefighters were sent to the spot.
Legal action will be taken upon investigation, he said.