London, Jan 5 : Hollywood actor Verne Troyer was so devastated after the death of co-star Heath Ledger, he found it hard to return to the movie set where they worked together.

The `Dark Knight' star was shooting `The Imaginarium of Dr Parnassus' with Troyer before his death last year.

And after Troyer heard about Ledger's tragic death, he was wary of starting shooting again.

"Going on set after he died was one of the most difficult things I ever did. I had scenes with him right before he died," the Daily Star quoted him, as saying.

Troyer also said that while co-stars Johnny Depp, Jude Law and Colin Farrell all donated their fee for completing Ledger''s final film role to the late

star''s daughter Matilda, he could not contribute.

"If I could have afforded it, I would have (donated) too," he added. (ANI)