Egyptian prosecutors questioned a former lawmaker close to the Muslim Brotherhood Tuesday over claims he incited protesters to torture an alleged government agent during the 2011 uprising, judicial sources said.

Mahmoud El-Khodeiry, who is also a former appeals court judge, was arrested during the night in Egypt's second city of Alexandria.

Egyptian troops killed a key suspect Tuesday wanted over attacks on the army in the Sinai this year and deadly 2004 and 2006 bombings of tourist resorts, security officials said.

Troops killed Mohamed Hussein Mohareb al-Shahir, his son and a third suspected militant in an operation south of the North Sinai town of Sheikh Zuwayed, the officials said.

Turkish Prime Minister Recep Tayyip Erdogan on Tuesday defended his latest tirade against the military rulers of Egypt which sparked a new diplomatic row between Ankara and Cairo.

"We will not stop saying what is right and standing by the Egyptian people just because the coup-installed government in Egypt is disturbed," Erdogan said in parliament.

Locked in a crackdown on the Muslim Brotherhood since president Mohammed Morsi's ouster, Egypt has launched a diplomatic offensive against the movement's foreign backers armed with funds from its old foes.

In their first salvo soon after Morsi was toppled, the military-installed rulers took aim at Qatar -- the only Gulf monarchy that openly supported the Brotherhood -- by closing the Egyptian channel of Al-Jazeera television.

Egypt said Monday it will allow six foreign groups to monitor a referendum on the revised constitution that is being drafted, although no date has been announced for the vote.

The referendum is the first key step of a roadmap adopted by the country's military-installed authorities after the ouster of Islamist president Mohammed Morsi in July.

Two policemen were wounded when a roadside bomb exploded early Monday at a checkpoint in a northeastern Cairo neighborhood that houses a presidential palace, judicial sources said.

The bomb was planted in a bush and went off at dawn in the capital's Al-Amiriya neighborhood, they said, adding that an investigation was launched to find the perpetrators of the attack.

Egypt's ousted president Hosni Mubarak and his two sons will face a new trial for using state funds to acquire personal property, judicial sources said Sunday.

Mubarak and his two sons, Alaa and Gamal, are accused of using 125 million Egyptian pounds (13.5 million euros, $18 million) -- which had been allocated for presidential palaces by the ministry of housing -- for personal purchases.

Egypt's interim president Adly Mansour approved a controversial law Sunday that regulates demonstrations and gives authorities the power to ban protests deemed a "threat" to national security, officials said.

The law also says protesters can be jailed for up to five years if found guilty of offenses ranging from covering their faces to carrying weapons while participating in demonstrations, presidency spokesman Ehab Badawi told reporters.

Dozens of Egyptian film-makers on Saturday slammed their representative on a panel revising the constitution for failing to oppose an article in the basic law allowing military trials of civilians.

A 50-member committee is revising the constitution that was adopted in late 2012 under the presidency of Mohammed Morsi but later suspended after his ouster in July by the army.

Turkish Prime Minister Recep Tayyip Erdogan said on Saturday his government would never respect military-installed rulers, in remarks made after Egypt's expulsion of Ankara's ambassador.

"I will never respect those who come to power after coups," Erdogan told reporters.