OMAHA, Neb. (AP) Seven people have been identified for threatening basketball referee John Higgins after an NCAA Tournament game in March. Information will be referred to authorities in their jurisdictions and to the FBI's Omaha field office, a Nebraska prosecutor said Friday.

Sarpy County Attorney Lee Polikov said the identities were ascertained after a lengthy investigation following Kentucky's 75-73 loss to North Carolina in the South Region final in Memphis, Tennessee, on March 26. Polikov did not release the names.

Kentucky coach John Calipari criticized the officiating during his postgame news conference. Higgins, of Omaha, saw his La Vista-based roofing company inundated with harassing emails, phone calls and voice mails, including death threats against Higgins and his family.