Law enforcers in Rangamati yesterday arrested Monir Uddin on charge of throwing acid on Eden College student Sharmin Akter Ankhi eight days ago.
Sources in Detective Branch (DB) said a DB team from the capital arrested Monir at Kurkutichhari in Barkol upazila of the hill district with the help of Ansar members around 10:00am.
The arrestee confessed to his guilt, said detectives.
Monir with his friend Masum on January 15 forcibly took Ankhi to a marriage registrar's office in the capital's Chankharpool. As she refused to marry Monir, the two threw acid on her and stabbed her.
The same day, victim's brother filed a case accusing the two for the attack. Ankhi is now undergoing treatment at Dhaka Medical College Hospital.