A Lakeland couple is dead after a domestic dispute on Halloween night, according to the Polk County Sheriff's Office.

LAKELAND — An argument about allegations of infidelity led a Lakeland man to fatally shoot his wife then turn the gun on himself Wednesday night while their two young daughters waited outside to go trick-or-treating, according to the Polk County Sheriff's Office.

Beatriz Araujo, 42, was in the couple's kitchen at 2336 10th St. West when her husband, Antero Araujo Quintana, 40, shot her in the head and the abdomen with a .380-caliber handgun, deputies reported. She was taken to Lakeland Regional Health Medical Center, where she later died.

Quintana died in the couple's living room after shooting himself in the head shortly before 6 p.m. Wednesday, according to deputies.

The couple's 21-year-old son witnessed the shootings, while their two daughters, ages 7 and 11, waited outside in the family's truck. Brian Bruchey, a spokesman for the Sheriff's Office, said family members have taken in the children.

Bruchey said the couple's son told deputies his parents had been arguing for several days before Wednesday night's shootings.