A small part of a cliff collapsed in Del Mar Tuesday, lifeguards said.
The collapse, between 10th and 11th Streets in Del Mar, happened gradually overnight heading into Tuesday, lifeguards said. A little more fell this morning.
When lifeguards discovered the collapsed bluff, they posted "unstable bluffs, stay back" signs in the area to warm surfers and beachgoers.
No one was injured.
No other information was immediately available.