Boyzone have announced they are continuing with the Australian leg of their farewell tour without Keith Duffy while the ill singer remains in hospital in Thailand.

In a video filmed ahead of a show in Perth, Shane Lynch says: "Unfortunately as you can see we are only three, our Keith Duffy is lost in Thailand.

"Just like the good film says, Thailand has got him now.

Keith Duffy

"He's not well and we don't know exactly what is happening with him at the moment, there are a lot of blood tests and one test and the other tests and he's in the hospital right now, hopefully recovering, fingers crossed.

"So just letting you know we are one man down."

Mikey Graham added: "One man down but we are soldiering on, looking forward to putting on a good show tonight here in Perth and looking forward to the rest of the Australia tour and hopefully sooner rather than later Keith will be back with us."

The group concluded by sending Duffy get well soon messages.

Ronan Keating shared the video on his Instagram page and wrote: "Perth we are ready for ya. Sadly Duster is not with us tonight but we are praying for his speedy recovery and he will be back with us soon."

He previously said his bandmate went on a "downward spiral" before being hospitalised and speculated that it could have been as a result of food poisoning.