MISSION VIEJO (CBSLA.com) — Authorities Thursday confirmed the identity of a missing 28-year-old woman whose body was located in the Cleveland National Forest through fingerprint comparisons.

A group of biologists working for Caltrans discovered a body Monday night in a creek bed, located one mile east of the San Juan Capistrano Fire/Ranger Station on the Ortega Highway near Hot Springs Road, according to the Orange County Sheriff’s Department.

READ MORE: Food Truck Crashes In Vernon; One Dead

On Wednesday, the OCSD’s Coroner Division conducted an autopsy, which revealed there were no obvious physical signs of trauma.

Fingerprints that were collected positively matched with the Cal-ID records to officially confirm Erica Alonso’s identity.

READ MORE: `Solidarity' Cited In New Deal For 40k Behind-the-Scenes Film & TV Workers

Alonso was reportedly last seen Feb. 15 after leaving her boyfriend’s home in Irvine. Her car was discovered about a mile away from her house a month after she was reported missing.

The cause of her death remains undetermined at this time.

The investigation is ongoing as detectives continue to process evidence.

MORE NEWS: Child, 18 Months, Killed in North Hills Crash

Anyone with additional information is urged to contact the Orange County Sheriff’s Department’s Homicide Unit at (714) 647-7055 or (714) 647-7000.