Cairo - The U.S. Embassy condemns in the strongest possible terms the attack today in Cairo that killed several police officers. A statement from the embassy said 'These officers gave their lives helping keep the city safe for their fellow citizens, visitors, and all who live here'. It added 'We grieve with their families and friends, and we extend our wishes for a speedy recovery to those injured.' An explosion in Cairo has killed six police and wounded another three on Friday. Another explosion this afternoon targeting a police car in Kafr el-Sheikh left at least one civilian killed.