Police invited survivors of the Supernova music festival and the relatives of the nearly 400 people murdered there by Hamas terrorists to claim thousands of personal artifacts found on the site, near Kibbutz Re’im.

In a statement, police on Monday said it had set up a website containing images of thousands of items from among the 20,000 objects recovered at the festival grounds.

The items contain specific characteristics that police photographed but did not publish.

Claimants who are able to describe those characteristics or otherwise prove ownership or a connection to the artifact they claim will be able to receive it by filing a form available for download on the website.

Last month, artifacts from the Re’im festival grounds were featured in a commemorative display at the Knesset.

One of them was a chunky metal necklace that belonged to Keshet Casarotti-Kalfa, 21, of Kibbutz Samar, who was murdered at Re’im.

“They asked us to bring some object belonging to our loved ones,” his mother, Natalia, said at a ceremony held at the Knesset on March 18.

“It never left his person, heavy though it was. I received it from police, stained with my son’s holy blood,” she said.

Police forensic experts, civilian professionals volunteering with police and ZAKA volunteers have sorted many of the items listed on the website, police said.

Thousands of objects have been returned, but an unknown number were looted by Hamas terrorists, looters who crossed in from Gaza, and thieves from inside Israel.

In November, police tracked down five men they said had stolen amplification equipment from the party grounds that had belonged to DJ and sound technician Matan Lior, who was murdered at the festival.

The equipment, worth more than NIS 1 million ($270,000), was returned to his father.