Gerik police chief Abdul Samad Othman said they received a report on the incident at 5.57pm.

He said investigations found that at 3.33pm, the complainant, a 25-year-old woman working at the supermarket, heard a sound like a zipper being opened. She went to check, and found the suspect engaged in an indecent act while looking at her.

“The complainant recorded the incident on her mobile phone and scolded the suspect, who immediately left the supermarket.

“Gerik police managed to track down and arrest the 55-year-old man, and will seek a remand order today to facilitate further investigations,” he said in a statement.

The case is being investigated under Section 509 of the Penal Code and Section 14 of the Minor Offences Act 1955.

Samad said the suspect, who is unemployed and single, had received treatment for mental issues. He was arrested at the Gerik bus station at 9.45pm.