Gunmen have killed a policeman and wounded three others in a drive-by attack on a patrol in Egypt's second largest city of Alexandria, a security official said.

"Armed men aboard a minibus opened fire on them and then made off," the official told AFP news agency on Sunday.

Scores of policemen and soldiers have been killed in bombings and shootings since the Egyptian military deposed President Mohamed Morsi in July last year.

Most of the attacks have been in the Sinai Peninsula, the deadliest of them claimed by Ansar Beit al-Maqdis, an armed group that has pledged allegiance to the armed Islamic State in Iraq and the Levant (ISIL), which controls large areas in Iraq and Syria.

However, there have also been repeated attacks in other places of Egypt, including in the capital.

On Saturday, gunmen killed a policeman and wounded another in a drive-by shooting in Cairo.

Source: AFP