Raleigh, N.C. — Crime scene investigators were still collecting evidence Monday from a Wake County home where a mother and father were shot to death this weekend.

Investigators say the bodies of Jose Samual Flores Mendoza and his wife, Maria Saravia Mendoza, both 34, were found around 12:30 a.m. Saturday at 708 Colonial Drive, near Garner, after a neighbor called 911 because she heard loud noises.

Authorities say the couple's 3-year-old son was in the home but was not harmed. The Mendozas also have a 12-year-old child who was not home when they were killed.

A neighbor in the same duplex where the Mendozas lived reported that bullet holes pierced the walls of his home, including one just above where an 8-year-old boy had been sleeping.

A spokeswoman for the sheriff's office said Monday that investigators don't think either victim was responsible for the killings, but they have not released any information about a possible suspect.

The couple and their children moved to the home about a year ago, said neighbors, who described them as a quiet, religious, hardworking couple who never caused problems.

The Mendozas worked in the kitchen of Golden Corral in south Raleigh.

"Both were long-term, valued employees and will be dearly missed," Scott Schaberg, a spokesman for the restaurant chain, said in a statement Monday. "Our thoughts and prayers go out to their families and especially to their two children."