OMAHA, Neb. (AP) — Attorneys are expected to deliver closing arguments Tuesday in the case against a former medical student accused of killing four people with ties to an Omaha medical school, including an 11-year-old boy.

Anthony Garcia’s attorneys focused during the last day of testimony Monday on the prosecution’s timeline and other aspects of the prosecution’s case. Garcia remained silent. He has not testified during the trial, which began Oct. 3.

Garcia is charged with stabbing to death the 11-year-old son of two doctors and the family’s housekeeper in 2008 and then killing another Omaha doctor and his wife in 2013. Prosecutors say the killings were motivated by Garcia’s desire for revenge against two of the doctors, who had him fired from the Creighton University medical school’s residency program in 2001.