A one-year-old baby and a seven-year-old girl were among six people shot dead in another day of violence in Mexico's troubled southern state of Guerrero, authorities said Tuesday.

At least one of the six victims in Monday's killing in the municipality of Chilapa was related to the town's former police chief, the state prosecutor's office said in a statement.

Authorities in France have arrested a man with links to an Islamic State jihadist in Syria over a plot to attack military personnel at a major naval base, police and judicial sources said Tuesday.

The 25-year-old, whom sources said had been monitored by intelligence agencies after trying unsuccessfully twice last year to travel to Syria, was held late last month and charged on November 2.

A Chinese naval flotilla arrived in Cuba Tuesday to bolster close military ties between the two Communist-ruled allies, its commander Wang Jianxun said.

"This is the first time a (Chinese) military flotilla has come to the island," Wang said at the Port of Havana.

Emergency service officials in Guatemala on Tuesday issued an orange alert over increasing eruptions from the country's southeastern Fuego volcano and ordered the evacuation of a nearby hotel.

The 3,763-meter (12,346-foot) high colossus -- whose name means "fire" in Spanish -- showed heightened activity overnight, sending columns of ash high into the sky, spilling lava down its side and provoking small tremors.

Clashes broke out between police and migrants living in temporary camps near the northern French port of Calais on Tuesday for a third night running.

Riot police used teargas and watercannon to end an hour-long standoff with the migrants, who started by throwing objects and insults at officers before lighting a wooden pallet on fire.

Indian Prime Minister Narendra Modi was hit Tuesday with the first open internal challenge to his leadership since taking power, with senior members of his party expressing anger at the loss of a key state election.

One-time Modi mentor LK Advani and three other veterans of his right-leaning Bharatiya Janata Party (BJP) issued a statement that appeared to accuse the premier of failing to seek consensus, without naming him directly.

Kosovo's constitutional court on Tuesday suspended the implementation of a key EU-backed agreement with Serbia, after weeks of opposition protests against the deal.

The move came a day after the U.N. cultural body UNESCO rejected Kosovo as a member, in a vote hailed as a victory by Belgrade.

Costa Rican authorities on Tuesday broke up a ring connected to an international network that smuggled migrants from Cuba, Asia and Africa willing to pay up to $30,000 each for a chance to make their way to the United States, officials said.

Twelve people were arrested in raids and near the Costa Rican capital San Jose and in the northwestern province of Guanacaste carried out in cooperation with Colombia and the U.S. embassy, the government's Public Ministry said in a statement.

Venezuela's opposition is seeking to oust President Nicolas Maduro by mid-2016, jailed dissident Leopoldo Lopez said Tuesday as the country headed toward legislative elections that the ruling socialists risk losing.

"This can't wait until the presidential elections in 2019," Lopez said in a message datelined from his prison cell and posted to a Twitter account managed by his wife.

The Organization of American States' chief questioned Tuesday whether legislative elections next month in Venezuela will be transparent and fair.

OAS Secretary General Luis Almagro said in an 18-page letter to the head of the Venezuelan election commission that conditions for the vote "do not ensure transparency and electoral justice."