PLYMOUTH, Mass. (AP) — A man charged in a hit-and-run accident that killed a 69-year-old woman and her dog in Plymouth says he thought he only hit the dog and didn't see the woman when he drove off.

Thirty-nine-year-old Timothy LaPierre pleaded not guilty Friday to motor vehicle homicide and leaving the scene of an accident during his arraignment in Plymouth District Court. LaPierre's lawyer, Timothy Shyne, said he expected his client to post the $25,000 bail that was set.

The accident Thursday killed Marjorie Cochrane and her pet boxer, Sasha.

Shyne says LaPierre couldn't see well because of glare from the sun and when he heard a thud, he only saw a dog running away. Shyne says LaPierre didn't see Cochrane because the impact of the accident apparently sent her over a snowbank.