Journalists and officials on Sunday joined a solidarity sit-in in downtown Beirut that was scheduled to coincide with a historic anti-terror march in Paris.

Carrying banners expressing support for the victims of the deadly attack on French weekly Charlie Hebdo, foreign ambassadors and Lebanese journalists flocked to the Samir Kassir Square in central Beirut.

German Justice Minister Heiko Maas urged an anti-Islamic movement to call off a planned march on Monday, saying it had no right to "exploit" the killings by jihadists in Paris.

Maas, the most outspoken German cabinet member against the so-called "Patriotic Europeans Against the Islamisation of the Occident" (PEGIDA), told the daily Bild in its issue to be published Monday that he found the right-wing populist group "hypocritical".

Top U.S. diplomat John Kerry vowed that no act of terror would halt "the march of freedom" as he expressed solidarity Sunday with the people of France after last week's Islamist attacks.

"We stand together this morning with the people of France as they march in tribute to the victims of last week's murderous attack on the headquarters of Charlie Hebdo in Paris," the U.S. Secretary of State said in India.

The bloodshed in France could signal the start of a wave of attacks in Europe, according to communications by Islamic State leaders intercepted by U.S. intelligence, German newspaper Bild reported Sunday.

Shortly after the attacks in Paris, the U.S. National Security Agency had intercepted communications in which leaders of the jihadist group announced the next wave of attacks, the tabloid said, citing unnamed sources in the U.S. intelligence services.

Mourad Hamyd describes himself as a normal 18-year-old who lives with his parents but on the day France was gripped by the Charlie Hebdo massacre, he became known as "the third suspect" -- even though he was in class at the time of the shooting.

The brother-in-law of one of the two gunmen turned himself into police on Wednesday, horrified and baffled to hear his name circulating in the news and on social media.

A 24-year-old German suspected of joining Islamic State jihadists in Syria was arrested Saturday, months after he returned from the war-ravaged country. 

The suspect allegedly arrived in Syria in October 2013 and was a member of the group until he returned home in November, German federal prosecutors said in a statement.

Israeli Prime Minister Benjamin Netanyahu Saturday told Jews in France, after 17 people were killed there in Islamist attacks, that Israel is their home and his government wants them to immigrate. 

"To all the Jews of France, all the Jews of Europe, I would like to say that Israel is not just the place in whose direction you pray, the state of Israel is your home," he said in a statement, referring to the Jewish practice of facing Jerusalem during prayer.

Israeli Prime Minister Benjamin Netanyahu told French Jews Saturday, after 17 people were killed there during three days of Islamist attacks, that Israel is their home. 

"To all the Jews of France, all the Jews of Europe, I would like to say that Israel is not just the place in whose direction you pray, the state of Israel is your home," he said in a televised statement, referring to the Jewish practice of facing Jerusalem during prayer.

France's security forces plan to deploy massively for Sunday's march in honor of victims of the Paris attacks, with up to a million of people expected, including several heads of state.

A crossbow in her hands and covered head-to-toe in a black Islamic headwear and robe that leaves only her eyes visible -- that is the image now circulating of France's most-wanted woman: Hayat Boumeddiene.

The 26-year-old is the partner of Amedy Coulibaly, one of the three gunmen shot dead by police after three days of high drama in France.