Naomi Watts cries during Ledger tribute

2002: Ledger met girlfriend and fellow Aussie Naomi Watts while shooting western "Ned Kelly." The duo, seen here at the 10th Annual SAG Awards, split in April 2004. [File photo]

A tearful Naomi Watts paid tribute to her former boyfriend Heath Ledger at a short-film festival in their native Australia on Sunday.

Watts, who was a judge at the annual Tropfest event in Sydney, started crying when organizers honored the late Ledger with a video montage of his career.

King Kong star Watts dated Ledger for two years after meeting him on the set of Ned Kelly in 2002.

The 28-year-old actor was found dead in his New York apartment last month. Toxicology results revealed he was killed by an accidental overdose of prescribed medications.