At least 10 people were injured Friday when government supporters wielding sticks attacked hundreds of protesters calling for political reform in Amman, dpa reported.
The demonstration was held after Friday prayers and most of the participants belonged to the Popular Unity Party, its chairman Saeed Thiab said.
The attackers chanted slogans in support of King Abdullah II, according to witnesses.
Thiab criticized the police for not intervening to protect the demonstrators. He also cast doubt on the credibility of the new government of Prime Minister Marouf Bakhit in implementing the promised political reforms.
Bakhit, a former premier, was picked by King Abdullah two weeks ago to form a new cabinet after he sacked the government of former prime minister Samir Rifai following widespread protests for political and economic reforms.