Updated, 7/10: Rich Deleon, a member of the Altadena Mountain Rescue Team, noted that while attempting to look for the lost hiker, the team found the dog, who was scared and ran into the brush to hide.
The team eventually found a man looking for the dog and found out that it was the dog who was missing and not a hiker. They were able to help get the dog out of the brush.
He had been missing for several hours at that point, Deleon said, and was badly dehydrated.
Update: Search and rescue teams ended up locating the hiker, but found out it was actually her dog that was lost - dispatchers misunderstood her when she called in, according to Lt. Sachs. The dog was also successfully located.
Original: A hiker called 9-1-1 and said she was lost somewhere off the trail to Echo Mountain on Monday afternoon, according to Lt. Elizabeth Sachs of the Los Angeles County Sheriff's Department.
Search and rescue teams have responded to the area and are looking for her, according to Sachs.
The hiker called in around 1:15 p.m. but shortly after connecting with the dispatcher the call cut off. The hiker has not since called back, Sachs said.
If the search and rescue team members cannot find her, the station will start a rescue operation with a helicopter search, Sachs said.