MILWAUKEE (CBS 58) -- A Milwaukee man was in court on Friday, Feb. 7 after he was arrested for stabbing and killing his landlord earlier this week.

Thirty-seven-year-old Justin Lannigan is charged with first degree intentional homicide. 

The stabbing happened on Sunday, Feb. 3, near 31st and State. The victim was identified as 74-year-old David Grosse by the Milwaukee County Medical Examiner. 

According to the criminal complaint, an officer with the West Allis Police Department was dispatched to a residence near 61st and Lincoln. The caller, who identified himself as Lannigan, said he had just killed his landlord. Upon the West Allis officer's arrival, he noticed Lannigan had lacerations on his hands and provided medical aid to him. 

Lannigan told the officer that he had stabbed his landlord "all over the body," per complaint. He told the officer that the stabbing happened at his apartment near 31st and State in Milwaukee. Lannigan told the officer he believed his landlord had set up surveillance cameras in his apartment and was recording him.

Per complaint, Lannigan told the officer that he called his landlord and asked him to fix his refrigerator. Lannigan told police that when his landlord was looking behind the refrigerator he started attacking and stabbing him. Per complaint, Lannigan said he choked him until he stopped breathing. Lannigan then drove to his brother's residence and called the police. 

Milwaukee police responded to Lannigan's apartment near 31st and State to find the victim deceased with approximately 30 stab wounds.

Milwaukee police interviewed family members of Lannigan, who said that he had been diagnosed with bipolar disorder and schizophrenia, and that he had become more reclusive over the past few months. 

In court on Friday, Lannigan's bond was set at $250,000. His next court appearance is scheduled for March 3.