A car mechanic in Brazil has confessed to killing at least 17 boys since 1991, police have said. Francisco das Chagas, 39, was arrested in the north-eastern city of Sao Luis de Maranhao in December in connection with a string of murders.
On Friday, police found two bodies buried beneath the floor of Mr das Chagas' house.
Police say he is gradually confessing to the crimes and is suspected of having killed at least 23 boys.
"He started confessing... and is still telling us details," investigator Joao Carlos Amorim Diniz told Reuters news agency.
"He said he had lost track of the murders and might have killed over 30 boys," Mr Diniz said.
Mr Chagas said he killed his victims with blows to the head, police said.
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