Aussie men leave Malaysia to resume lives

Eight of the nine Australian men who were arrested for sporting Malaysian-flag budgie smugglers at the Grand Prix have checked onto flights at Kuala Lumpur airport, hours after escaping conviction.

In their first night of freedom after being detained on Sunday night, three men checked into a flight bound for Singapore just after 6.30pm local time (9.30pm AEST) on Thursday, before five more of the friends left a few hours later.

They made no comment as they made their way to immigration.

Jack Walker, staffer to Australia's Minister for Defence Industry Christopher Pyne, remained behind with his father John Walker on Thursday night.

The group of nine, which also included Thomas Whitworth, Branden Stobbs, Edward Leaney, Nicolas Kelly, Thomas Laslett, James Paver, Adam Pasfield and Timothy Yates - pleaded guilty to being a public nuisance but were cautioned and released without conviction.

John Walker said on Thursday that his son Jack and his friends just wanted to go home and "resume their lives".

"We are just relieved the boys are out of danger," he told reporters following the ruling.