All three robbers were wearing Halloween masks when they held up the home at 5600 Mary Lane Drive just after 11:30 p.m. Tuesday. Two of the three were armed, one with a shotgun and the other a handgun, according to police.
The masks worn were described as a court jester mask, a mask from the movie "Scream", and a clown-type mask, police said.
At one point, one of the gunmen asked for someone who didn't even live at the home. Shortly thereafter, one of the residents got into a fight with him, causing the shotgun to go off.
The blast went into the floor and no one was seriously hurt, though a 25-year-old resident was beaten during the holdup, police said.
The robbers were all described as black male adults between 5'10" and 6'2". They headed east on Mary Lane Drive in a dark SUV after the robbery.
It was unclear exactly what was stolen from the home.