Spanish police on Sunday arrested a suspected member of an al-Qaida-linked militant group fighting in Syria, authorities said.

The suspect Abdelwahid Sadik Mohamed, a Spaniard, "is accused of taking part in the 'holy war' in Syria", the interior ministry said in a statement.

Debate on Tunisia's new constitution was suspended on Sunday after a deputy claimed he had received death threats because a colleague accused him of being an "enemy of Islam."

The accusation came a day after the National Constituent Assembly (NCA) adopted articles making Islam the state religion but guaranteeing freedom of conscience.

Investigators have found 12 weapons inside the Palestinian mission in Prague where a New Year's day explosion fatally wounded its envoy, police said Sunday.

At the same time Prague police chief Martin Cervicek denied media speculation that an arsenal of more than 70 weapons had been kept at the embassy, but would not give details.

Human body parts fell from the sky in the city of Jeddah Sunday, with police saying they could be the remains of a person trapped in an airplane's wheel bay.

"Police received a telephone call at 2:30 am from a witness reporting the fall of human remains at an intersection in Mushrefa neighborhood" in the Red Sea city, spokesman Nawaf bin Naser al-Bouq said in a statement.

An Egyptian court on Sunday gave suspended one-year sentences to 12 activists including youth leaders of the 2011 uprising for an attack on a former presidential candidate's headquarters.

Those sentenced include Alaa Abdel Fattah and Mona Seif, prominent youth activists known for their leading role in the revolt that toppled president Hosni Mubarak.

A series of bombings killed at least 15 people in Baghdad on Sunday, officials said, as militants held a major city and part of another west of the Iraqi capital.

The three car bombs and one roadside bomb, which hit three separate areas of Baghdad, also wounded at least 40 people, the officials said.

Jihadists killed at least 50 rival rebels Sunday in a new front in Syria's brutal war, the Syrian Observatory for Human Rights said, citing insurgents and medics.

The rebels were killed in fighting, car bombings and also summary executions by forces loyal to the Islamic State of Iraq and the Levant.

Iraq is preparing a "major attack" to retake militant-held Fallujah, a senior official said Sunday, spelling a new assault for the city, west of Baghdad, where U.S. forces repeatedly battled insurgents.

Washington said it would help Baghdad in its fight against al-Qaida-linked militants but that there would be no return of U.S. troops.

Israeli Prime Minister Benjamin Netanyahu accused Palestinian leaders Sunday of "inciting hatred," as U.S. Secretary of State John Kerry visited the region to push peace talks forward.

"The Palestinians are continuing their campaign of inciting hatred, as we have seen in the last few days with their refusal to recognize Israel as a state for the Jewish people," Netanyahu told a weekly cabinet meeting.

Egypt's interim president on Sunday made a rare visit to see the pontiff of the nation's Orthodox Christians at St. Mark's Cathedral, the papal seat in central Cairo, according to a brief statement by the church.

The highly symbolic visit to Pope Tawadros II by Adly Mansour was made ahead of the Coptic Christmas, which falls on Tuesday.