A preliminary police investigation revealed that the suspect in the Setia Alam shopping mall shooting on Saturday night (Feb 8) allegedly opened fire on a janitor after becoming angry when asked to move his belongings.br br Bukit Aman Criminal Investigation Department director Datuk Seri Mohd Shuhaily Mohd Zain told reporters on Sunday (Feb 9) that the suspect, a local man in his 30s, was believed to be under the influence of drugs at the time.