I saw a segment on these people last night. Very strange.

http://au.news.yahoo.com/thewest/a/-...disappearance/

Fresh leads have emerged in the mystery disappearance of a Nannup family and their friend who vanished without a trace six years ago.

Major crime squad detectives have revealed details about the last suspected movements of Tony Popic, a 40-year-old who disappeared in July 2007 with his housemates - internet cult leader Simon Kadwill, 45, his partner Chantelle McDougall, 27 and their daughter Leela, 6.

A man using Mr Popic?s identification stayed at a Northbridge backpackers on the night of July 15, 2007.

Police say they believe that man caught a train from Bunbury to Perth earlier that afternoon using the name J Roberts and caught a 7.15am train to Kalgoorlie the next morning also as J Roberts.

But it is there the trail goes cold again.

The man had bought a return ticket for the Kalgoorlie trip but police are still unsure if he travelled back to Perth on July 17 as booked.

Police suspect it was Mr Popic who used the J Roberts? ticket and stayed in the Underground Backpackers because his mobile phone was used in the city within minutes of the train?s arrival in Perth. His driver?s licence with his photo was also used as identification to rent the double room.

But it may have been Mr Kadwill posing as his friend, as it emerged after the group?s disappearance his real name was Gary Felton and he had stolen the Kadwill identity from an associate in England.

Det-Sen. Sgt Greg Balfour said although it was a long time ago police hoped someone would remember being on those trains with the man and could tell police what he looked like or whether he was with anyone else.

?It would help immensely even if we can identify whether ?J Roberts? was Tony or Simon,? he said.

Mr Popic and Ms McDougall?s families fear their disappearances could be linked to Mr Kadwill?s involvement in a secretive doomsday cult and have previously accused the Englishman of brainwashing their loved ones.

None of the adults have touched their bank accounts or used their phones since July 2007 and police are investigating if they are in hiding or died in a murder-suicide pact.

Mr Kadwill had told friends he was becoming disillusioned with the world and considering using drugs to end their lives.

Previous suggestions the group had travelled to a city in Brazil known for its religious cults and been staying in Britain turned out to be dead ends.

Ms McDougall?s mother Kath said she hoped the release of new details might make someone realise they knew something that could help or decide now was the time to speak out.

The Perth train trip came a day after Ms McDougall called her mother to say Mr Popic was driving her and Leela to Perth ahead of a planned trip to Brazil and two days after the three of them were last seen selling a car to a Busselton dealership.

She said Mr Kadwill had already gone to South America but police have no evidence any of them went overseas.

Mr Popic?s phone was used to make two calls early on July 16 before a taxi booked under the name of Tony went from the backpackers to the East Perth railway station.

Six minutes later, the man left on the Prospector and Mr Popic?s phone was not used again.

Complicating matters is that later the same morning, July 16, a J Roberts bought a ticket from the East Perth station for a train and bus to Northcliffe, the same destination as a ticket that had been booked from the family?s Nannup house earlier in the month but never used.

Police are unsure if it is just a co-incidence because J Roberts is a common name or whether one of the missing men went to Kalgoorlie that day while the other went to Northcliffe. They would like to speak to any J Roberts who may have visited those areas at the time to rule them out of the inquiry.

Anyone with information is asked to call Crime Stoppers on 1800 333 000.