Nassau County officials said Wednesday they have stepped up police patrols around temples and synagogues for Passover, which begins Friday evening and ends April 30.

‘We want to wish everybody a happy Passover and make it as safe a Passover as possible,” County Executive Edward Mangano said at a Mineola news conference with police officials and community leaders.

“Our best defense here is to elicit the help and support of the public, because no one knows the community better than those who reside in it,” Mangano said at the news conference at the Nassau County Police Department headquarters.

“And that’s why we ask our residents once again: If you see something out of the ordinary, if you see something that’s suspicious, say something by dialing 9-1-1,” he said.

The officials said members of the public should alert law enforcement if they see an unattended package at or outside a temple or synagogue, train station or other high-traffic area.

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Acting Police Commissioner Thomas Krumpter said at the news conference, “At this time, there are no credible threats,” and added, “It’s all about awareness.”

Mindy Perlmutter, executive director of the Jewish Community Relations Council of Long Island, attended the news conference with two of the council’s board members.

The Suffolk County Police Department said in a statement Wednesday that its officers have been instructed to perform directed patrols at synagogues and other Jewish institutions, and to be aware of the schedules of religious services.