Lendel Williams was checking his property in Milton , Massachusetts on days ahead of selling it when his electrician found the device . It was behind a recently plastered wall in a bedroom closet and had wires leading out of it to a light switch . Police believe it was designed to cause 'significant destruction ' The tenants moved out last week , Tuesday after a vandalism complaint was filed when cement was poured down the drains . Authorities are seeking the family and others who had access to the house .
Lendel Williams was checking his property in Milton , Massachusetts on Tuesday ahead of selling it when his electrician found the device . It was behind a recently plastered wall in a bedroom closet and had wires leading out of it to a light switch . Police believe it was designed to cause 'significant destruction ' The tenants moved out last week , days after a vandalism complaint was filed when cement was poured down the drains . Authorities are seeking the family and others who had access to the house .