Tunisian authorities arrested a popular comedian and a television show host on Friday for having "offended" President Beji Caid Essebsi, the prosecutor's office said.

"The prosecutor has decided to place in detention" satirist Migalo, whose real name is Wassim Lahrissi, and television host Moez Ben Gharbia for having "offended the president", prosecution spokesman Sofiene Sliti said.

He declined to give further details on the alleged offence, but alleged that the pair had also committed "fraud" and said they will remain behind bars until they appear in court on March 25.