Rabiul also confessed to committing the crime to the Dinajpur court Saturday
The charge sheet has been filed against, Rabiul Islam, a suspect in the attack on Ghoraghat upazila UNO Wahida Khanam and her father.
Investigative Officer (IO) of the case Imam Zafar filed attempted murder charges against Rabiul with the Dinajpur Chief Judicial Magistrate (Amli Court-7) on Saturday evening.
After filing the chargesheet he said that DNA and forensic tests point to Rabiul Islam in the crime scene.
Zafar, also the officer-in-charge of Detective Branch (DB) of police, said that Rabiul confessed to the court of the crime under the Section 164 of the Code of Criminal Procedure.
On September 11, Rabiul Islam, 43, who had been suspended from his post of the gardener over a theft case, was detained from his house.
On September 3, Rabiul and others attacked the official residence of Upazila Nirbahi Officer Wahida. They first tied up the doorman and broke in through the ventilators at the back of the house.
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The attackers hacked Wahida indiscriminately, leaving her with critical head injuries, and went on to attack her father Ali Sheikh, 70, who rushed in to save her.
The father and daughter were taken to Rangpur Medical College and Hospital.
Later, the UNO was airlifted from Rangpur to the National Institute of Neurosciences and Hospital in Dhaka by a Bangladesh Air Force helicopter.
Several including a Jubo League leader have been detained and interrogated over the case.
On October 1, Wahida was discharged from the National Institute of Neurosciences and Hospital after about one month of treatment.