Bellevue detectives are investigating the death of a 28-year-old Colorado woman, found outside a Hilton hotel early Friday.

At about 8:20 a.m., on June 28, maintenance crews found the woman near the Hilton’s concrete patios on the first floor. The woman was a guest at the hotel.

Investigators are waiting to hear back on the cause of death from autopsy and toxicology reports. There were no obvious signs of foul play.