Amy Winehouse’s home was robbed just days after she died, with personal belongings such as unreleased tracks, lyric books and letters taken from the home, reports Britain’s The Sun.

Winehouse’s father, Mitch Winehouse, has vowed to track down the thief after he returns from a vacation taken to deal with the loss of his daughter, the story notes.

About 20 people, including family, friends, police and security, have had access to the house since the singer’s death.

Missing items include one of her favorite guitars and handwritten lyrics for her unreleased third album. The home in North London was declared a crime scene following the death last month of the singer at age 27.