Four suspected Islamic militants arrested in Paris

PARIS -- French counter-terrorism agents have arrested four suspected Islamic militants who were allegedly plotting attacks in France, judicial officials said Thursday.

The agents found electronic components and a mysterious substance hidden in hair treatment bottles when they arrested the suspects at home Tuesday in Romainville, a suburb north of Paris, the officials said on condition of anonymity. The substance was being analyzed by government experts.

Authorities said they believe the suspects are linked to a group of Chechens apprehended last week in the nearby suburb of La Courneuve with possible bomb-making materials.

France has been on high alert for possible terror strikes during the holiday season, and the government has increased police presence in public areas such as department stores and train stations.

The raid in La Courneuve turned up a suit to protect against nuclear, chemical and biological attacks, a video camera, two empty gas canisters and false identity papers.