(AP) — A Tampa mother accused of killing her two teenagers told a detective hours after the bodies were found that they had been mean and she hoped they were dead.

Prosecutors on Wednesday played a recorded interview between Julie Schenecker and Tampa Police Det. Gary Sandel, conducted in January 2011.

Prosecutors Schenecker killed her 16-year-old daughter and 13-year-old son. She has pleaded not guilty by reason of insanity to two counts of first-degree murder.

Schenecker told Sandel that she shot the teens and that she had wanted to commit suicide. During the interview, her voice was slow and slurred.

Schenecker’s attorneys say she has suffered from bipolar disorder and depression for decades.

Prosecutors say the slayings were premeditated.