An attack targeting Yemeni President Ali Abdullah Saleh in a mosque located in the presidential palace killed three presidential guards, Yemen's state news agency said on Friday.
State news agency Saba said a shell landed in the front part of a mosque inside the presidential palace where Saleh and top government officials were present.
A presidential office source said some of the officials were injured, but could not provide any numbers or names.
"A cowardly attack with an explosive projectile took place during Friday prayers at the presidential palace's mosque where President Ali Abdullah Saleh and senior government officials were present," the agency said.
President Ali Abdullah Saleh was wounded along with his premier and other officials in the attack.
Saleh "was lightly wounded in the attack" on the palace mosque in Sanaa, a security official said. Saleh was receiving treatment at a military hospital, Al Arabiya TV cited a ruling party official as saying.
The extent of Prime Minister Ali Mohammed Mujawar's injuries were not immediately clear while deputy prime minister for defence and security, General Rashad al-Alimi was reportedly "critically wounded and hospitalised."