Selangor police chief Mazlan Mansor said the 16-year-old boy was picked up while exiting the stadium.
“The suspect had (allegedly) ignited the firecrackers at 10.50pm while he was queuing towards the exit behind the scoreboard on Level Three of the stadium.
“He was detained by a policeman who saw him in the act while patrolling the area. The policeman also found a lighter on the suspect,” he told a press conference here today.
After questioning, the police accompanied the teenager back to his house in Klang early today and found 40 ball-shaped firecrackers in his room.
The suspect was being remanded for two days until tomorrow to facilitate investigations under Section 6 of the Explosives Act 1957, he said.
Meanwhile, Mazlan said police were also closing in on a male suspect in his 20s, suspected of hurling firecrackers at the same stadium during the SEA Games semi-final football match between Malaysia and Indonesia last Saturday.
Those with information about the suspect are urged to come forward to the nearest police station to facilitate investigations, he added.