A man covered in blood walked into a Pennsylvania hospital and told staffers he had just fatally stabbed his boyfriend during an argument about their relationship.

Manheim Township police say 30-year-old Matthew Van Zandt is charged with homicide in the death of 31-year-old Ian Shannon, whose body was found Wednesday in a Lancaster home.

Authorities say Van Zandt walked into St Luke's Hospital in Allentown early Wednesday seeking a treatment for a cut on his hand and told an emergency room nurse about the slaying.

Domestic violence: Matthew Van Zandt, 30 (left), has been charged with homicide in the stabbing death of his boyfriend, 31-year-old Ian Shannon (right)

Police found Shannon naked on a bed inside his and Van Zandt's home on Dickens Drive in Manheim Township, Pennsylvania

The nurse described Van Zandt as being 'saturated in blood,' which he said was not his and came from a dead person, recorded WFMZ citing police records.

Police say he also told a hospital security guard that the knife he used in the killing was in his backpack.

Authorities had gone to the Lancaster home in the 400 block of Dickens Drive shortly before 1am Wednesday for a reported domestic dispute but got no response at the residence and left.

They returned more than two hours later after learning of Van Zandt's confession and found Shannon lying naked on a bed. The room where the crime took place was said to be awash in blood.

According to police, the victim was 'obviously deceased,' having been stabbed and slashed 'numerous' times.

Van Zandt confessed to killing Shannon (left), telling police the man mocked him during an argument about their relationship, which the suspect had wanted to end

Lancaster County District Attorney Craig Steadman told Fox43 that prior to the attack, VanZandt and Shannon had an argument concerning their impending breakup.

The neighbor who made the initial domestic disturbance report told officers at the scene that he heard loud screams. He also said that Shannon and Van Zandt had a history of disputes.

When interviewed by police following his arrest, Van Zandt confirmed that earlier that morning, he told his boyfriend he wanted to end their relationship, according to a criminal complaint cited by PennLive.com. In response, he said Shannon began mocking him, which led Van Zandt to grab a pocket knife and stab his partner in the face, neck and torso.

Shannon was a superfan of the rock band Third Eye Blind, whose members on Wednesday posted a message on social media mourning his death

The officer who conducted the interview described Van Zandt as 'calm and monotone.'

Wednesday's arrest was not Van Zandt's first run-in with the law: court records indicate that in the past he was picked up on charges of shoplifting, DUI and disorderly conduct.

Shannon was a superfan of the rock band Third Eye Blind, and on Wednesday the group posted a message on Facebook mourning his death.

'Today our community is struck with grief,' the post read. 'Ian Shannon wasn’t just a fan or an expert - he is Third Eye Blind. Ian traveled all over the United States to see us play, always front row. Thank you Ian for bringing so much love to us and our community. We will remember you forever.'