There have been deadly clashes between Yemen’s allied Houthi rebels and supporters of ex-president Ali Abdullah Saleh, as tensions between them grow.
Mr Saleh’s General People’s Congress (GPC) party said four people were killed in fighting at the main mosque in the capital, Sanaa, on Wednesday.
It accused the Houthis of undermining their partnership.
The once bitter enemies are fighting a war against forces loyal to the current President, Abdrabbuh Mansour Hadi.