
The accused, Umme Jannat Sathi, 28, is the wife of Hridoy, 32, of the same area.
Quoting locals, police said there had been frequent arguments between the couple over family matters.
As a sequel to this, Sathi allegedly attacked her sleeping husband with a knife around noon, leaving him critically injured with cuts on his throat.
Hearing his screams, family members rushed to the spot and rescued Hridoy in a critically injured and bloodied condition. He was first taken to Lalmonirhat Sadar Hospital and later shifted to Rangpur Medical College Hospital for advanced treatment.
Saad Ahmed, Officer-in-Charge (OC) of Lalmonirhat Sadar Police Station, said police rushed to the spot after being informed and detained the accused, reports UNB.
He said the blood-stained knife used in the attack was recovered and the motive behind the attack is under investigation.