Police say they will provide more information at a news conference on Tuesday afternoon.
According to what police have previously said, Harrison did not show up for work on the morning of Aug. 23, 2013.
A co-worker found him inside his Pitch Pine Crescent home that morning and called police.
Harrison was pronounced dead at the scene. He was 41 years old when he died.
Police have yet to publicly reveal the cause of Harrison’s death.
Harrison had been coaching his children’s baseball game the night before he was found dead.
Police have previously said that Harrison had been living in the upper floors of his home at the time of his death. There were tenants who lived in the basement.
Both of Harrison’s parents had died in the same home in recent years and police have said that his mother’s 2010 death was suspicious.
In 2009, Harrison had been convicted of impaired driving causing death.