DENVER -- Jewish synagogues in Colorado beef up security ahead of Rosh Hashanah. They're not too concerned, just being alert.
The holiday which marks the start of the Jewish New Year began Wednesday evening and ends Friday evening.
The Department of Homeland Security says ISIS is potentially targeting Americans and Jewish people.
Local synagogues declined on-air interviews saying they don't want extra attention.
Denver's Temple Sinai did tell FOX31 Denver it is taking extra precautions, but that it always does around holidays.
"We make sure that law enforcement knows where synagogues and temples are during this time of year and we ask people to be aware of their surroundings and circumstances as we would ask them to do all year round," says Anti-Defamation League regional director Scott Levin.
Levin also says there is no indication of any threats.