CAIRO (AP) -- A roadside bomb went off on Sunday on a busy downtown Cairo street near the Egyptian Foreign Ministry, killing two senior policemen, the Interior Ministry said in a statement.
It said the 10:45 a.m. blast targeted a police checkpoint near the back gate of the ministry building. Several people were wounded, said the ministry. It identified the two officers as Lt. Cols. Khaled Saafan and Mohammed Abu Sreeah. It said several other policemen were wounded by the blast, but it did not give a figure.
Security officials said seven people were injured in the blast and that security forces evacuated four nearby schools as a precaution while bomb squad teams combed the area searching for more explosives.
The officials spoke on condition of anonymity because they were not authorized to speak to the media.
Sunday's blast coincided with the reopening of schools after the summer break, an occasion that routinely sees massive traffic congestion throughout the city of some 18 million people.
Egypt has faced a violent campaign by radical Islamists since last year's ouster of President Mohammed Morsi. The campaign has mostly targeted security forces, first in the Sinai Peninsula, but more recently in the capital, the Nile Delta and remote areas such as the western desert.