Education director-general Azam Ahmad said the measure would remain in place until the end of the probe, and would not affect the school’s operation.

“The investigation needs to start now. We will assess which officers and staff members need to be summoned,” he said at a press conference, adding there was no need to shut down the school while the probe was in progress.

Asked if the education ministry would instruct all schools to implement thorough bag checks, he said such a procedure already existed, but urged schools to take stern action on any security-related issues.

Petaling Jaya police chief Shamsudin Mamat had earlier said the victim was stabbed multiple times in the 9.30am incident by a 14-year-old student at the same school.

He said police had confiscated two sharp weapons believed to have been used by the suspect.

The education ministry and police have formed a special committee and task force, respectively, to investigate the case.

The Bandar Utama stabbing marks the second major school-related crime in just over a week, following the gang rape of a Form 3 girl at a school in Alor Gajah, Melaka, on Oct 2.