A man convicted of killing two people in Lincoln is asking a judge to throw out his life sentences, saying he was too heavily medicated on anti-psychotic drugs to be competent to stand trial.

The Lincoln Journal Star reports that Todd Baker asked a Lancaster County District judge last week for a hearing. Baker wants to present evidenced he says will show that his convictions were unconstitutional.

The 49-year-old Baker was convicted in 2006 in the 1996 killing of Anne True after Baker’s ex-wife went to police with information in the case. In 2007, while already serving a life sentence for True’s death, Baker was convicted of killing 15-year-old Missy Schmidt.

Police say Baker randomly attacked both women with a hammer and dumped their bodies in rural ditches.