Lisa Marie Presley Files For Divorce From Musician Michael Lockwood

Lisa Marie Presley has filed to end her marriage to Michael Lockwood.

According to reports, Elvis's daughter decided to end the 10-year union because of "irreconcilable differences" and officially separated from the 54-year-old musician in mid-June.

Presley, 48, and Lockwood are expected to battle it out over who gets custody of their children, 7-year-old twin girls Finley and Harper.

As RadarOnline.com recently revealed, Lockwood has been battling heart problems and had to have emergency medical care last Thanksgiving.