The amount of cash that was in the safe is "substantial," reportedly in the six-figure range, police said. The robbery on Leiali'i Street in Newtown was reported Sunday at 12:30 a.m.

According to police reports, the four men broke into the residence at about 10 p.m. A 20-year-old woman and boy, 11, were tied up and threatened by one of the intruders, who was carrying a gun. No injuries were reported.

The thieves took the safe with them. The owners of the home have an adult entertainment business.

Police have not released any descriptions of the suspects. However, anyone with information about the case can call CrimeStoppers at 955-8300 or *CRIME on a cellular phone.