A secondary school in Tuen Mun on Friday said it was offering counselling to its students after an alleged knife attack in a classroom.

A 13-year-old girl was arrested on suspicion of attacking a male classmate with a 30-centimetre knife after an argument on Thursday afternoon at CCC Hoh Fuk Tong College.

The boy suffered injuries to his shoulder, back and hand and was taken to Tuen Mun Hospital for treatment.

The school said social workers and educational psychologists were available to provide counselling to pupils.

The Education Bureau said it was very concerned about the incident and was working closely with the school to provide support.