Movie A-listers have attended a memorial service in LA for actor Heath Ledger.

Among the stars who turned out were Tom Cruise and wife Katie Holmes, Sienna Miller, model Lily Cole, Josh Hartnett and Lindsay Lohan.

Ledger, 28, died in his Manhattan apartment on January 22.

He had been filming scenes for The Imaginarium of Dr Parnassus at Battersea Power Station just before Christmas.

Authorities suspect a possible drug overdose, but the cause of his death is still pending the outcome of toxicology tests.

Police said several prescription drugs were found in the Manhattan apartment where the actor's body was found.

The hour-long tribute to the Oscar-nominated actor at Sony Studios in Hollywood included five eulogies from family and friends.

He is expected to be laid to rest later this week in his home town of Perth, Australia.

Ledger's former fiancée, actress Michelle Williams, said of his death: "My heart is broken. I am the mother of the most tender-hearted, high-spirited, beautiful little girl, who is the spitting image of her father.

"All that I can cling to is his presence inside her that reveals itself every day."