BUFFALO, N.Y. (WIVB) — A jury found Timothy Wisniewski, 51, guilty on all five counts against him related to the boating accident that claimed the life of a Lockport teen.

Back in June of 2015, Wisniewski, and two teens — Gregory Green, 18, and Avery Gardner, 16, were riding in his boat in Ellicott Creek in Tonawanda.

Green, who prosecutors say was drunkenly driving the boat, allegedly went under a footbridge.

When he did this, prosecutors say Gardner struck her head on the bridge and died. Green later admitted to criminally negligent homicide and vehicular manslaughter.

Wisniewski was charged with providing alcohol for the teens, letting Green drive the boat, criminally negligent homicide, operating a vessel while under the influence of alcohol, endangering the welfare of a child and unlawful marijuana possession.

News 4 learned of the guilty verdict against him on Monday.

“The jury spent several hours working its way through the facts and law and it reached in my mind the correct verdict, a just verdict, a fair verdict, one fully supported by the evidence and the law,” said Michael Flaherty, acting Erie County District Attorney.

Wisniewski remains in jail on a $20,000 bail. His sentencing is set for January.

Green will be sentenced in early December.