Part of an ocean-front bluff above Leucadia State Beach collapsed Wednesday afternoon, but no injuries or damage to homes on top of the ridge were reported.

"The cliff in the 1500 block of Neptune Avenue gave way about 3 p.m.," Encinitas lifeguard Capt. Larry Giles said.

A portion of the retaining wall holding back the earth from collapsing onto the public beach below gave way.

"At the time when we arrived on scene, there was some bystanders there indicating that no one was hurt, injured or trapped," said Giles. "The fire crews quickly went to the top of the bluff and assessed the homes for any damages to the property," he added.

Wednesday afternoon's collapse was the second in three weeks. On December 23, 2010, another portion of the bluff fell.

"We had exceptional rains in the last month," said Greg Shields, Senior Civil Engineer for the City of Encinitas. "Once the rain has stopped, then the water that's in those soils starts to evaporate and things start to move a little bit," he said.