The man suspected of murdering four people before burning their corpses and burying them on a farm reportedly confessed to two additional killings.
Cosmo DiNardo, 20, allegedly confessed to the two Philadelphia killings while speaking to Bucks County investigators after being busted for fatally shooting four men in the back during separate drug transactions, according to CBS Philadelphia.
The police in Philadelphia are investigating the confession, the network said.
DiNardo was arrested last week and charged with four counts of criminal homicide and abuse of corpse.
His cousin, Sean Kratz, has also been charged in the murders.