French anti-terrorism police arrested six people in the city of Lyon on Tuesday who were believed to have been planning terrorist attacks against sex clubs. The six converts to Islam, who were being monitored by the authorities, had already purchased bus tickets to travel to Syria via Bulgaria and Turkey in order to join ISIS there.

At least two were planning to acquire weapons and carry out attacks on swingers' clubs before travelling to Syria, the International Business Times reported.

France vowed closer security cooperation with Belgium on Monday after prime ministers Charles Michel of Belgium and Manuel Valls of France met in Brussels. The gathering included the interior and justice ministers of both countries and senior intelligence officials. Intelligence sharing will be boosted following the meeting.

“We must be united around our values, cooperate and become stronger against terrorism. I have never doubted the Belgian people,” Valls said.

As another defense measure against terrorism, students at certain schools in France were told to smoke inside school property, since congregating outside poses to much of a terrorism risk.

“Students massing on the street constitutes a very high risk, one that is certainly greater than that posed by the consumption of tobacco,” Deputy Secretary-General Michel Richard of the school administrators union (SNPDEN) told France Info.

SNPDEN called for the government to introduce a nationwide policy of smoking on school premises, which the Health Ministry rejected. Several schools implemented the measure anyway.

NHK reports on the one year anniversary of the Charlie Hebdo attacks: