Mosul, Iraq, Nov 10 (SPA) - Gunfire and explosions echoed across the northern Iraqi city of Mosul on Wednesday, but it was not immediately clear who the combatants were. A Reuters reporter said residents were staying indoors as small-arms fire rattled and blasts from rocket-propelled grenades shook the city. U.S. helicopters flew overhead. --SPA 1436 Local Time 1136 GMT www.spa.gov.sa/216533