The low-key 30-minute service took place at Westwood Village Memorial Park, just hours after 1,000 guests at an Australian event in New York listened to a message from Ledger's father, Kim, read out by Australia's consul-general.
Ledger, 28, was found dead in his New York apartment on Tuesday. An autopsy carried out on Wednesday failed to reveal how the actor died, although police believe his death could be drug-related as sleeping pills were found by his bed.
He will be buried in his hometown of Perth, Australia.
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