District police chief Anuar Abd Rahman said the authorities were investigating the incident for improper use of emblems and names, insulting behaviour, and improper use of network facilities.

“Police have recorded the statements of the complainant as well as the suspect involved in the incident,” he said in a statement.

A video, uploaded at about 12.30pm today, shows a man hoisting the flag, while another was recording it.

A report was lodged at the Kepala Batas police station.

Anuar reminded the public against sensationalising the matter to avoid disrupting public order.

Earlier today, Malaysiakini reported that the hardware shop owner involved in the gaffe said he was measuring the length of an iron pole while hanging the flag and did not notice that the flag was upside down.

The owner said he rectified the mistake immediately after realising it.

He apologised for the blunder and lodged a report at the Kepala Batas police station to provide an explanation.

It was the sixth flag-related incident since January, and the second case of improper handling of flags this month.

On Aug 1, SJKC Chung Hua in Port Dickson apologised for mistakenly flying the Jalur Gemilang upside down.