SOUTH BEND -

Tuesday afternoon update: We're now getting a better idea of why one South Bend man is charged with killing another man – gambling and theft.

Court records released this morning claim 55-year-old Michael Taylor admitted to shooting and killing Michael Gillam inside a building on Olive Street just before midnight Saturday night.

However, Taylor says the gunshots fired accidentally when he used that handgun to beat another man with whom he was fighting.

Taylor claims that other man had robbed him a couple months ago while gambling.

Taylor is already a two-time felon and should not have had a gun to begin with.

Monday night update: The St. Joseph County prosecutor's office Monday night said formal murder charges have been filed against a man accused in a weekend shooting death in South Bend.

The shooting happened just before midnight Saturday near Olive and Linden Streets.

Police say the victim, 36-year-old Michael Gillam of South Bend, was shot in the chest and pronounced dead at the scene.

Officers arrested 55-year-old Michael Taylor after he turned himself into police a few hours after the shooting.

Taylor was booked into the St. Joseph County Jail, and Monday night learned he has been formally charged with murder, unlawful possession of a firearm by a serious violent felon and being a habitual offender.

Taylor is being held without bond.

Metro Homicide has not released a motive for the shooting and the investigation remains ongoing.