Alexandra Kogut Murder: N.Y. man admits he snapped, beat girlfriend with curling iron, police say

A Monroe County Sheriff's Office report released Wednesday says Whittemore, 21, detailed the killing to an officer on Sept. 29, after his arrest earlier that day.

 According to the report, Whittemore said he and 18-year-old Kogut got into a shoving match while arguing over "stupid stuff" in her room at the State University of New York College at Brockport. According to CBS affiliate WROC, Whittemore said Kogut was continuously rude to him earlier while they were at a friend's house.

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