Miscreants attempted to set fire to a branch of Grameen Bank in Sreepur, Gazipur, prompting the bank authorities to file a general diary (GD) with police.
The incident took place around 2am on Sunday at the bank's Tengra-Sreepur branch in Telihati union of the upazila.
The bank was saved from a fire after its night guard and officials noticed the flames and quickly extinguished them.
According to bank officials, the branch has residential quarters inside the building. After completing their daily work, officials usually lock the office and return to their quarters.
Around 2am, the night guard's shouts alerted the officials, who rushed downstairs and found a fire near the entrance. They then put it out using their own arrangements.
Farid, the branch's night guard, said he had been sleeping in a room on the ground floor as he was feeling slightly unwell.
He said several miscreants climbed over the boundary wall, set fire to some materials and threw them inside the building's main gate. Hearing the guard's shouts, the officials came downstairs, while the attackers fled the scene.
Shahadat Hossain, manager of the Tengra-Sreepur branch, said they rushed downstairs after hearing the guard's shouts and managed to extinguish the fire.
He said they called the national emergency helpline 999, following which police visited the scene. The bank authorities later filed a GD with Sreepur Police Station.
Sreepur Police Station Officer-in-Charge Mohammad Shahinur Alam said police visited the scene after receiving the information.
He confirmed that the bank authorities had filed a GD, adding that police were working to identify those involved in the incident.