The Federal Bureau of Investigation (FBI) U.S. has resumed in New York investigating a case of the disappearance of a child in 1979 that shocked for years to New York society.A large group of FBI agents and police in New York has come to a building in the SoHo district in lower Manhattan, to search the basement possible skeletal remains of children, Etan Patz, who was six years the time of his disappearance. "Obviously we hope to find new evidence to help us in relation to the disappearance of Etan Patz," said FBI spokesman, Tim Flannelly, who reiterated the determination of the authorities to solve this crime. The small Etan, whose case shocked for years to New York families, was last seen alive on May 25, 1979 when he left home alone early in the morning to walk to the bus stop should lead to college. Officially declared dead in 2001 Researchers are now looking for new clues on the whereabouts of Patz, who authorities officially declared dead in 2001 in a Prince Street building at no great distance from home where the child resided. Apparently, the newspaper 'The New York Times, a dog specialized in searching for bodies alerted the authorities after a tour last week by the building's basement, where they now expect to find human remains or personal effects of child . The police spokesman, Paul Browne, has indicated that a large group of researchers, who have already upset a basement wall for evidence-work "24 hours a day, over the next five days." For Patz, who became one of the first child whose image appeared printed on milk cartons across the country, took even the then U.S. president, Ronald Reagan, to declare May 25 "National Children's Day Missing '. Police always suspected that the head of the boy's death was Jose Ramos, who is currently serving a prison sentence in Pennsylvania for molesting another child, and against whom charges were never filed for lack of evidence. Ramos was dating a woman who worked at the home of the Patz, and even got to admit that the day of his death was with him, but always denied having kidnapped. The case was reopened in 2010 by the Manhattan District Attorney, Cyrus Vance.