WASHINGTON (AP) — The number of Americans the government believes is fighting alongside extremist groups in Syria is almost one-tenth the number cited by government officials and lawmakers for months.

There are about 12 Americans believed to be fighting in Syria right now, FBI Director James Comey said Thursday. There are more than 100 Americans who have either tried to go to Syria and were arrested, or went and came back to the U.S., Comey said without offering more details.