General Adel Ragaei dies in hail of bullets in front of his home in Obour City suburb of the capital, relatives say.
The UN wants to extend a three-day ceasefire in Yemen that all sides have been accused of violating.
Twenty-six Asian sailors, held captive in a small fishing village since 2012, were released on Saturday.
Escalating clashes highlight conflicting agendas of Turkey and US in increasingly complex battlefield in northern Syria.
Fighting rages as nearly 1,000 treated for breathing problems following sulphur plant fire south of key Iraqi city.
Crowded passenger train goes off the tracks along the route that links capital Yaounde with economic hub Douala.
Ruling on charges arising from the killing of protesters in 2012 is first final verdict against deposed president.
Twenty killed as FSA checkpoint destroyed by car-bomb attack as world powers prepare for weekend truce talks.