Police are seeking the public's help in locating family members of one of the four mentally-disabled people found chained to a basement boiler Saturday.

 

Herbert Knowles, 40, has the mental capacity of a 10-year-old and may be from the state of Virginia. He was found around 10:40 a.m. Saturday with three other people locked in an apartment building heater room on the 4700 block of Longshore Avenue in Tacony.

 

Knowles was malnourished and evaluated at Frankford South Hospital.

 

Anyone with information concerning the whereabouts of his family is asked to call the Northeast Detective Division at 215-686-3153 or 54.