An assistant chef is the latest to be detained for allegedly posting an insulting statement against Johor crown prince Tunku Ismail Sultan Ibrahim.

Johor police chief Wan Ahmad Najmuddin Mohd said the 23-year-old was picked up at Taman Intan, Dengkil, at about 8pm yesterday.

"He had allegedly uploaded the offensive message via Facebook to offend and insult Tunku Ismail.

"We have also confiscated a mobile phone and a SIM card and the suspect will be under remand for investigations," he said in a statement today.

Wan Ahmad said the case will be investigated under Section 233 of the Communication and Multimedia Act 1998, which carries a maximum fine of up to RM50,000 or not more than a year's jail or both.

The assistant chef is the second person to be detained for allegedly posting insulting social media posts against the Johor crown prince.

A Pahang football fan was remanded in Johor Baru for two days for allegedly posting a degrading tweet against Tunku Ismail.

Masyhur Abdullah, 29, allegedly uploaded the message using the Twitter handle @thekeluangman.

He was arrested in Kuala Lumpur on Wednesday and brought to Johor Baru.

Like the assistant chef, he was also investigated under Section 233 of the Communications and Multimedia Act 1998.