Modeling photographer working in Carlsbad arrested for sexual assault

Modeling photographer working in Carlsbad arrested for sexual assault
Posted at 4:02 PM, Nov 15, 2018
and last updated 2018-11-15 19:02:42-05

CARLSBAD, Calif. (KGTV) — A 52-year-old modeling photographer was arrested this week in Carlsbad, accused of sexually assaulting a teenager.

Robert Koester, of Carlton, Ore., was arrested on Tuesday at a Carlsbad Blvd. residence after the reported sexual assault of a 16-year-old during a modeling shoot, according to Carlsbad Police.

Police were alerted to the reported sexual assault on Monday after the teenager said she met with Koester, who was subcontracted by Frank, a Carlsbad-based modeling agency. 

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The victim said during the photo shoot, Koester sexually assaulted her. She left the shoot early and told her father about the incident.

Police investigated and found Koester at the residence, which he was temporarily renting. Police said other evidence was collected at the scene.

Investigators are working with the modeling agency, Frank, to identify other possible victims. Investigators believe Koester worked under the aliases "Rhake Winter" and "Bert Kay" as well.

Anyone with information about Koester is asked to call Carlsbad Police at 760-931-3819 or email their tipline at

Koester has been charged with great bodily injury, sexual battery, possession of child pornography, and providing harmful material to a minor. He was released on bail until he is due back in court.