A youth, who was suffering from hysteria, drowned in the Madhumati River in Mohammadpur upazila on Monday morning.
The deceased was identified as Rana Islam, 26, son of Golam Sarwar, of Dupuria village.
Tarak Nath Biswas, officer-in-charge of Mohammadpur Police Station, said Rana drowned in the river while swimming around 10am.
Locals rescued him and took him to Mohammad Upazila Health Complex where the doctor pronounced him dead, the OC added.
Family sources said Rana was a hysteria patient.