Detectives detained four people on Thursday for selling oxygen cylinders at Pabna General Hospital premises spreading false information about oxygen crisis at the hospital.
Police also seized 14 oxygen cylinders from them.
The accused were identified as Masudur Rahman, 45, Kazi Akash, 25, Afzal Hossain, 25 and Jibon Hossain, 22, all hailing from the city's Shalgaria area.
They were produced before a mobile court led by executive magistrate Mamun Sarker which sentenced them to 15-day imprisonment each.
Police Superintendent of Pabna Mohibul Islam Khan said drive will be conducted against those who will try to take advantage of the Covid-19 situation and spread propaganda about the government hospitals.
He said there is no oxygen crisis at the hospital and if needed patients can seek help from political and social organizations who supply oxygen cylinders for free to Covid-19 patients in the district.