Three people, including two Rapid Action Battalion (Rab) personnel, were badly beaten up by locals in Mirsarai upazila on Wednesday night after being mistaken as robbers, officials said.
The injured Rab men have been identified as Kausar, 29, and Mokhles Uddin, 33. The other victim has been identified as Rab informer Pervez, 28.
The two Rab members were brought to Dhaka for better treatment by a helicopter around 9.30pm, said Rab's senior assistant director (media) Nurul Absar Chowdhury.
The trio went to Baroiyarhat Municipality Bazar in a car around 8.45pm to gather information about drugs-business in the area, the Rab said in a release.
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Suspecting them as robbers, local people thrashed them, leaving the three injured. On information, a team of Rab-7 rushed to the spot and rescued them.