Julie Powers Schenecker: Tampa Mom Covered Bodies of Calyx and Beau with Blankets, Say Police

(CBS/WTSP/AP) Julie Powers Schenecker, the Florida mother who police say killed her teenage daughter Calyx and son Beau "for talking back" too many times, covered her kids' bodies with blankets after shooting both of them in the head, say police.

PICTURES: Julie Powers Schenecker Kids

According to a search-warrant affidavit made public Tuesday, two police officers found 50-year-old Schenecker unconscious on the screened back porch of the upscale home Friday morning, her white robe covered with dried blood. Schenecker's mother had called from Texas and asked police to check on her daughter, who had been depressed and complaining about her children.

The warrant said one officer woke her up and took her inside to talk, while the other went looking for the children.

One of the officers found the covered body of Schenecker's 16-year-old daughter, Calyx, in a bed upstairs, the affidavit said. The body of her 13-year-old son Beau was found in a van in the garage, also covered with a blanket. She told detectives she killed them for being "mouthy."

Schenecker told detectives she had shot her son twice in the head in the van "for talking back" while she drove him to soccer practice Thursday night. She said she returned home and killed her daughter with two shots to the head while the girl sat at a computer doing homework. She then apparently moved her to a bed.

Both teens were killed with a .38-caliber pistol, which authorities say Schenecker bought five days earlier, according to CBS affiliate WTSP.

Bullets, medication and a Smith & Wesson instruction manual were among the items found in the master bedroom and bathroom upstairs, the document said. It did not specify what type of medication was found.

Schenecker was ordered held without bail Monday during a brief court hearing during which she did not speak.

COMPLETE COVERAGE OF JULIE POWERS SCHENECKER ON CRIMESIDER