The victims are 3, 9 and 37 years old. The suspect, a man, is in custody, according to police.
The incident happened in house on Cushing Street between Oak and Ash. Officers responded to the scene at about 7 p.m.
No information as to a motive or what relation the suspect is to the victims has been made available by police.
Stay with FOX 2 for more details as they become available.