A 'tsunami' of raw sewage which caused havoc in Southern California last month may have been deliberately released by someone in Mexico.
More than 143 million gallons of raw sewage has spilled into the Tijuana River in Mexico, crossing the border as the river flows into the Pacific Ocean near San Diego on the California side of the frontier.
The tidal wave of effluent began on February 2 and only stopped last week.
It was initially blamed on the failure of a sewage collector pipe.
But the Mayor of Imperial Beach, Serge Dedina, told the Los Angeles Times: 'This was like a tsunami of sewage spills. What's worse is it looks to me like this was deliberate.'
He said: 'It saves (them) a lot of money in pumping costs, and ultimately, they can get away with it and do it all the time, just on a much smaller scale.'