A woman accused of giving her former boyfriend guns used in a shooting at a Kansas lawn equipment factory plans to mount a battered woman's syndrome defense at her August trial.

The attorney for Sarah Jo Hopkins filed notice Wednesday saying he plans to introduce expert evidence related to her mental state. The defense is also seeking to suppress her statements.

The 28-year-old Newton woman has pleaded not guilty to transferring weapons to a prohibited person.

Prosecutors say she gave Cedric Ford an AK-47-type semi-automatic rifle and a .40-caliber handgun that he used in the Feb. 25 attack at Excel Industries in Hesston. Four people, including Ford, were killed and 14 others were injured.

Hopkins has told investigators that she gave him the guns because he had threatened her.