CLINTON, Ill. (AP) — Prosecutors said Thursday they won't seek the death penalty for a woman charged with murder in the deaths of her three children, who drowned when their car rolled into a lake.

Amanda Hamm is scheduled to stand trial later this year. Her former boyfriend and co-defendant in the case, Maurice LaGrone Jr., was convicted last month.

After LaGrone was found to be ineligible for the death sentence — jurors said prosecutors failed to prove that LaGrone had intended for the children to die — prosecutors decided not to seek the death penalty for Hamm.

"It seemed like a pretty self-evident move having received a decision from a jury in Mr. LaGrone's case saying there was not even eligibility," prosecutor Roger Simpson told The Associated Press Thursday.

Prosecutors have said Hamm and LaGrone, both 30, plotted to kill 6-year-old Christopher Hamm, 3-year-old Austin Brown and 23-month-old Kyleigh Hamm, who drowned on Sept. 2, 2003, when the car they were in sank into Clinton Lake.

Defense attorneys argued during LaGrone's trial that he did not intentionally drown the children but said he made bad decisions, such as parking too close to the water on a boat ramp. LaGrone was sentenced to life in prison.