A Filipino 'cult' has admitted to robbing cemeteries to obtain human body parts which they claim will make them invisible - if they put them in their mouths.

The group, known locally as Haring Bakal - or Iron King - believe human remains grant them superhuman powers and hire grave robbers to get body parts for their stomach-churning ceremonies.

Sickening footage shows a 'blessor' - a 'medicine man' - from the cult preserving stolen kneecaps in bleach and coconut oil.

Stomach-churning: Haring Bakal Blessor, Angelito 'Rambo' Oreta removed the remains of a human leg from a jar of bleach and coconut oil

Holy ceremony: Amulets and human kneecaps are distributed to other members of the Haring Bakal cult in the Philippines

Amulets: Haring Bakal - or Iron King - believe human remains grant them superhuman powers

Iron King blessor and member Angelito 'Rambo' Oreta said devotees then fashion the human remains into belts - or hold them inside their mouths in the belief they will hide them from sight.

Oreta, who wears the belt night and day, said: 'It is found in the bible, Ezekiel 37 the valley of dry bones, 'you offer their spirit to god and to wash their sins by means of prayer or oracion'.

'The spirit of the body will work as a guardian for you if you offer them a prayer or oracion. They'll even protect your house and your family.

'If you don't offer any prayers, they'll be the one who puts you in harm's way.'

Oreta said holding the grim good luck charms increase the power of your punches when brawling with enemies.

Ready for magic: The cult believed that human knee-caps, seen here sealed in plastic bags, can make a person invisible to their enemies if put in their mouth

Vile: Oreta is seen preparing the kneecap for one of the cult's ceremonies

But in a stomach-churning sacrifice, he said the most magical powers are drawn from popping the human body part inside your mouth.

Oreta, from Manila, added: 'Sometimes you have to put it inside your mouth, which makes you invisible to your enemy's eye. Or at least they won't notice your presence.'

Iron King banded together to combat a Muslim insurgency in the 1970s with tales of fearless fighters charging into hand-to-hand combat with armed troops.

Now the group has found a foothold in the primarily Catholic nation with roughly 100 members in total including policeman and soldiers who have reportedly joined for their own safety - despite the group being labelled a cult.

Last month, they grabbed headlines by claiming to grant devotees 'bulletproof powers' - by hacking them with machetes.

Shocking: Oreta, seen far right, unpacks a prepared human kneecap which is to be given to a member of the cult

Illegal methods: Oreta, pictured, said the cult pay grave robbers to get body parts for their stomach-churning ceremonies

Journalist Nikon Celis, who took part in the machete ritual and filmed the blessor handling the stolen body parts, said: 'I can understand for some people this is crazy or disgusting.

'It could be seen as offensive to the family of the deceases, why would you do that? But I also respect their belief.

'Sometimes they rob the graves themselves and sometimes they pay a professional. Both ways are illegal, of course.

'They say the protection is much better to know the name of the human so you can call their name during the prayer.

'The Philippines has many mysterious traditions. I know it's taboo to other cultures, but it's different over here.'