At least five policemen were killed on Friday in an attack in Yemen's port city of Aden, a government official said.
According to the Aden-based government official, a group of militants believed to be Al-Qaeda members attacked a police station in Aden's district of Daar Saad, Xinhua reported.
Three police personnel were also injured in the attack, the official said.
"Masked attackers fired rocket-propelled grenades at the police building and then opened heavy fire," local residents said.
The port city of Aden, Yemen's temporary capital, has been witnessing a state of chaos and lawlessness during the past weeks resulting in the assassination of Aden's former governor, several high-ranking security officers and judges.
Yemen, an impoverished Arab country, has been gripped by one of the most active regional Al-Qaeda insurgencies in the Middle East and the affiliate of the Islamic State.
The security situation in the country has deteriorated since March when war broke out between the Shia Houthi group, supported by former President Ali Abdullash Saleh, and the government backed by a Saudi-led Arab coalition.