A small bomb went off Tuesday evening on a bridge in the Egyptian capital without causing any casualties, a security official said.

The explosion in central Cairo caused only minor damage to the bridge's handrail, the official said.

Egyptian police on Tuesday shot dead a militant suspected of being involved in a January bomb attack against Cairo police headquarters, the interior ministry said.

The bombing in the heart of the capital, one of many attacks targeting security forces since the ouster of Islamist president Mohammed Morsi in July, had killed four people.

Egyptian military chief Abdel Fattah al-Sisi arrived Tuesday in the United Arab Emirates, a strong supporter of his July ouster of Islamist president Mohammed Morsi, the WAM news agency reported.

Field Marshal Sisi, who is Egypt's defense minister and deputy premier, traveled to the UAE to attend the closure of joint military exercises there. He was met by UAE deputy army chief Sheikh Mohamed bin Zayed al-Nahyan.

An Egyptian court jailed 77 supporters of deposed Islamist president Mohammed Morsi Tuesday for three years for rioting during deadly clashes in Cairo that killed dozens last August, a judicial source said.

The court also ordered that they report to police regularly for another three years after their release.

Interior Miniser Nouhad al-Mashnouq stated on Tuesday that Lebanon has taken a “clear position” on all forms of extremist terrorism.

He added in statement: “We understand Saudi Arabia's recent designation of the Muslim Brotherhood, Hezbollah in the kingdom, and al-Nusra Front as terrorist.”

A doctor in Egypt will face trial for performing a female circumcision operation that killed a teenage girl, a judicial official said on Tuesday.

The 14-year-old girl's father who took her to the doctor for the procedure will also face trial, the official said.

Egyptian authorities decided Tuesday to take control of independent mosques, state news agency MENA reported, in a move aimed at curbing Islamist dissent.

The measure aims to further tighten the state's grip on all mosques in the country, deeply polarized since the ouster of Islamist President Mohammed Morsi.

At least 24 people were killed in Egypt Tuesday when a bus ploughed into a truck parked on the side of a road, police and medics said.

The accident occurred near the entrance to the Sinai peninsula, home to beach resorts that attract tourists and workers from the mainland.

Egyptian police said they arrested a man Monday suspected of carrying out a deadly bomb attack in the capital Cairo, accusing him of having fought with jihadist groups in Syria.

Since the army ousted Islamist president Mohammed Morsi in July last year, militants have launched frequent attacks on police and troops across the country, but particularly in the Sinai Peninsula.

The council of Arab foreign ministers decided Sunday during a meeting in Cairo to support the Lebanese government materially and financially to help it cope with the Syrian refugee crisis.

The council also agreed to ask the member states to share the burden, stressing that the refugees' presence in Lebanon is “temporary” and that efforts would be exerted to return them to their country as soon as possible.