The former Bon Jovi star is accused of threatening to kill and bury Lund after pulling out of a clothing line project.

Lund has filed a complaint with cops in Los Angeles and they are waiting to question the guitarist, according to Britain's Daily Mail.

It is alleged Sambora made the threats during a phone call with Lund last month (Mar15) after their planned Nikki Rich clothing line stalled when he pulled out.

A spokesman for Los Angeles County Sheriff's Office tells the New York Daily News, "I am confirming we are investigating such an incident. (The complainant) stated that Mr. Sambora made some threats against her. Deputies tried to contact Mr. Sambora, but he was not at his residence. A report was taken, and now Malibu Lost Hills detectives are investigating."

Sambora and Lund had enjoyed an on/off romance for several years but are not believed to be currently dating.