US film-maker Allan Francovich, who made a controversial documentary about the Lockerbie bombing, has died.

Francovich collapsed on April 17 at Houston Airport, Texas, and was pronounced dead at hospital, where the cause was given as a heart attack.

His ashes will be brought to the Isle of Skye for a ''service of celebration,'' said a friend in Scotland, David Ben-Aryeah.

He had written a film script while on Skye and had also visited the island with bereaved Lockerbie parent Dr Jim Swire while making the Lockerbie documentary The Maltese Double Cross, said Mr Ben-Aryeah.

''While he was there, he came to love the island, its tranquillity, its scenery and its people,'' he said.

Francovich, in his early 50s, made several other controversial film documentaries, mostly concerning the work of America's Central Intelligence Agency.

The Maltese Double Cross, shown to MPs at the House of Commons before being screened in Britain in 1995, challenged the official version of how a bomb brought down New York-bound Pan Am Flight 103 on December 21, 1988.

It argued that the official version was a cover-up, and the authorities knew the plane was going to be bombed, but did nothing to prevent it for fear of exposing a US-sponsored drug-smuggling operation.