A pile of debris and bones that washed ashore on Avon beach Sunday and sparked rumors it was human remains is anything but, officials said Monday. 

The Monmouth County Medical Examiner's Office determined the bones were not human, but did not specify their origin, according to county Assistant Prosecutor Mark LeMieux. 

The two piles of debris reportedly washed ashore at 1 p.m. and then 2:30 p.m. Sunday afternoon, causing local officials to keep swimmers and other beachgoers temporarily restricted from the immediate area. LeMieux said the bones and other debris posed no health risks to any nearby swimmers.

"Nothing was explained to me that shows (the debris) would pose a health risk to anyone in the water," LeMieux said. 

As far as what led anyone to believe the bones were of human origin, LeMieux said he could not speculate on the matter. 

The bones were among the first set of debris, while the second set included clothing, LeMieux said.