WAUKEGAN, Ill. (CBS) — Prosecutors in north suburban Lake County say a Bartlett man had used cocaine and alcohol before he operated a boat which struck and killed a 10-year-old boy last month.

As WBBM Newsradio’s Steve Miller reports, it was late on the afternoon of Saturday, July 28, when Antonio “Tony” Borcia and his family were out in a boat on Petite Lake, near Lake Villa.

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LISTEN: WBBM Newsradio’s Steve Miller reports

Tony fell off an inner tube, and as his father turned around to pick him up, prosecutors say David Hatyina, 51, of Bartlett, barreled his boat down the lake and hit Tony, killing him.

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The accident shocked witnesses who were expecting a relaxing day at the lake. They heard screams near the accident site.

Hatyina recently appeared in Lake County court and was held on $1 million bond.

Tony’s family issued a statement, which says, “It is this system of justice that we now rely upon to punish this individual for killing our sweet and innocent Tony, and deter others from acting with such conscious disregard for the safety of our children.

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The Lake County State’s Attorney’s office says Hatyina had cocaine in his system, and was over the legal limit for blood alcohol.