HILO, Hawaii (AP) — Police say two Big Island residents were bound during a home invasion robbery by two armed and masked men. 

Hawaii County police say the two suspects entered a Hilo home through an unlocked door Monday night and demanded money from a 72-year-old man and his 51-year-old son. 

While the occupants were bound, the suspects searched the house and entered an adjoining home before fleeing with an undisclosed amount of money. 

The victims were not injured.