Marta del Castillo Casanueva, police have still not been able to find her body.

Marta del Castillo Casanueva, police have still not been able to find her body.
According to self-confessed killer and ex-boyfriend of the victim, Miguel Carcaño, 21, Marta's body was thrown into the river Guadalquivir.Carcaño later changed his statement and claimed she was on a rubbish dump just outside the city.The killer told police a year ago that he and his former girlfriend had argued after she told him she wanted to see him to find out about rumours he had allegedly spread about her.In the heat of the moment, Carcaño said he threw an ashtray at her whilst they were in his flat in Camas (Sevilla), knocking her unconscious.Believing her dead, he said he panicked and threw her into the river with the help of his older stepbrother and a friend, whilst another friend was said to have stayed behind to clean up the blood and other evidence.But later statements suggested Marta had been gang-raped and then strangled.More than 200 technicians and members of the armed forces searched the river, and then the rubbish dump.They then combed the area around Miguel's flat after one of his ex-girlfriends said she thought Marta had been dumped in a ditch near the block.MP for Andalucía Juan José López Garzón revealed that searching the rubbish tip alone had cost the taxpayer 200,000 euros.