A California woman whose body was found in a Las Vegas hotel-casino laundry chute likely fell from the 18th floor to an area 15 floors below, police said Tuesday after initially calling her death suspicious.

Homicide detectives found no indication Kalli Medina-Brown, 26, of Citrus Heights, was killed but believe she tumbled to the laundry collection area on the third floor at the D Hotel and Casino, authorities said.

Her body was discovered in the laundry chute about 2:40 a.m. Sunday at the downtown property. An official determination of how she died is pending, with toxicology results due in several weeks.

Medina-Brown was in town with her husband celebrating her 27th birthday, her grandfather said. Tony Fratis said police told family members that security video showed Medina-Brown walking away from her husband, Weslee Brown, at the hotel and toward a housekeeping closet, Las Vegas news station KTNV-TV (bit.ly/1RZb24G) reported.

Efforts by The Associated Press to reach Fratis and Brown weren't immediately successful.

Police said they won't make the surveillance video available.

Fratis told the station that he has not spoken with Brown but believed he was still in Las Vegas cooperating with the investigation.

The hotel owner couldn't immediately be reached for comment.

A spokeswoman issued a statement calling the death unfortunate but declined to comment about the investigation. She said the hotel, a 34-story property with almost 640 rooms, was cooperating with authorities.