The number of people killed globally in terrorist attacks jumped 80 percent last year to the highest level ever recorded, the Institute for Economics and Peace said Tuesday.

The Global Terrorism Index found that 32,658 people were killed by terrorists in 2014, up from the 18,111 fatalities of the previous year, the largest increase on record.

A surge of some 2,000 Cuban migrants trying to cross Central America to reach the United States triggered a diplomatic spat between Costa Rica and Nicaragua Monday, plunging tense relations between the two countries to a new low.

The row boiled over this past weekend when Nicaragua forcibly sent back the Cubans, who had been given temporary visas by Costa Rica to traverse its territory, ignoring an appeal by San Jose that they be given a "humanitarian corridor" through the region.

U.S. Secretary of State John Kerry arrived in Paris on Monday to underscore Washington's "strong relationship" with France in the wake of the attacks on Paris, a State Department spokesman said.

"He will reiterate America's commitment to our strong relationship with France and express our condolences as well as our shared resolve to continue countering violent extremism here and around the world," State Department spokesman John Kirby said.

The Eiffel Tower reopened on Monday, three days after closing because of the wave of terror attacks on Paris.

The iconic tower -- like monuments the world over following the deadly jihadist attacks on Paris -- will be lit up in the French national colors blue, red and white from sundown, its operator said Monday.

European foreign ministers meeting in Brussels on Monday called for unity in the fight against terror following the attacks in Paris.

EU foreign policy chief Federica Mogherini said Friday's attacks in Paris, which left 129 people dead and were claimed by the Islamic State (IS) group, were "not an attack on one single country" but "an attack on Europe... an attack on civilization."

German authorities said Monday they have arrested an Algerian asylum seeker who reportedly told other migrants early last week that Paris would be hit by bomb attacks.

"He is said to have told other refugees the previous Sunday or last Monday that a bomb or bombs would go off in Paris four days later," a senior prosecutor, Werner Wolff, told AFP.

European populist and far-right leaders Monday seized on the jihadist attacks in Paris to demand the continent stem the record migrant influx, charging that terrorists could hide among the masses.

France's anti-immigration National Front leader Marine Le Pen called for an "immediate halt" to new migrants, while Germany's Islamophobic PEGIDA movement hoped to draw record numbers to its latest rally Monday evening.

President Francois Hollande said Monday France would step up the battle against the Islamic State (IS) group in Syria in the wake of Paris attacks he dubbed "acts of war."

Hollande told an exceptional meeting of both houses of parliament he would meet U.S. President Barack Obama and Russia's Vladimir Putin in the coming days and called for a U.N. Security Council meeting over the fight against IS jihadists.

Dutch police have arrested two people after a massive operation at  in south Limburg province, close to the Belgian border, Dutch media reported Monday.

Video images showed at least 10 marked and unmarked police vehicles at a barn near the small town of Susteren, 30 kilometers (18 miles) north of Maastricht, while a police helicopter was circling overhead.

At least seven people were killed and 12 others wounded Monday when a gunfight broke out in Somalia between rival security forces as they waited for cards for food aid, police said.

"There was exchange of gunfire between policemen who were guarding a distribution site and members from the military," police officer Mohamed Burhan said, adding that seven civilians were killed in the crossfire in the clashes, just outside the capital Mogadishu.