SACRAMENTO (CBS13) – A jury has convicted a Sacramento man on 15 counts of sexual assault charges, including raping three women.

Robert Hill now faces life in prison. He’s convicted of crimes over a 15-month period starting in spring of 2013.

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The first incident happened in April 2013 in North Highlands. The second happened on golf club court in south Sacramento the next January.

Investigators say it was evidence from a rape in July 2014 on Massie Circle behind a building that linked all three together.

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In all three cases, the women were in the mid-twenties and walking alone.