Police say the incident has happened a number of times on a path near Esplanade and Villines avenues.
While the man has not been aggressive or shown aggression toward the joggers who were nearby, police are still asking people to be careful.
The latest incident happened Thursday around 9:45 a.m. Police say a woman was jogging on a pathway on the southside of Esplanade Avenue in Rancho Park.
Along that pathway is a drainage area, just about 10 to 15 feet away. That's where police say the man pulled down his pants and exposed himself as the woman jogged by. The suspect was only about 15 feet away from her when she saw this. She was able to get away and that's when she called police.
Because incidents like these have happened multiple times in this area, residents say they're disturbed.
"It actually surprises me because it's a pretty nice neighborhood," said San Jacinto resident Thomas Alberson. "You got a family park and everything here, so it is surprising."
"What we're advising people to do is jog or walk in pairs," said Sgt. Joey Nardone from San Jacinto Police. "Stay away from any of the areas where he might be able to hide, and just be aware of your surroundings and call us immediately if they do see something suspicious."
Authorities say the suspect is a Hispanic man, between 25 and 35 years old, 5 feet 8 inches tall, 165 pounds with dark hair. He was last seen wearing a white shirt and dark shorts.
If you have any information, call the authorities at 951-654-2702.