Police are searching an area of Mount Greylock in Adams, Massachusetts, for evidence connected to a Berkshire County man already serving a life sentence for killing two children.
District Attorney David Capeless says officers will concentrate their efforts on areas not searched previously at the base of the highest peak in Massachusetts.
Lewis Lent Jr., a handyman from North Adams, is serving life in prison for the 1990 abduction and murder of 12-year-old Jimmy Bernardo, of Pittsfield, and the 1993 slaying of 12-year-old Sara Ann Wood, of Frankfort, New York.
Lent has also confessed to killing 16-year-old James Lusher, who disappeared while riding his bike in Westfield in 1992.
The bodies of Wood and Lusher have never been found.
State police say they have "recently developed information suggested that area be searched."