A Texas boat parade in support of US President Donald Trump's re-election campaign ran into trouble on Saturday, as multiple vessels took on water or sank, authorities said.
The Travis County Sheriff's Office "responded to multiple calls involving boats in distress during the Trump parade on Lake Travis," it said on Twitter.
"Several boats did sink."
There was no evidence of foul play, sheriff's office spokeswoman Kristen Dark said.
No injuries or medical emergencies were reported at the parade on Lake Travis, located northwest of Austin.
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"Some were taking on water, some were stalled, some were capsizing, it was all types of different things," Ms Dark said.
Photos on Twitter showed boats flying Trump 2020 flags in choppy water, likely caused by the large number of vessels moving closely together.
"There were an exceptional number of boats on the lake today," Ms Dark said, adding authorities were still gathering data on how many boats sank and how many people were rescued.
More than 2,500 people marked themselves on Facebook as having attended the 'Lake Travis Trump Boat Parade', which Ms Dark said was three to five kilometres long.
The parade, taking place over the US Labor Day holiday weekend, was to feature four parachutists jumping out of a helicopter with smoke and flags, according to the event's Facebook page. Boats were asked to travel at 16 kms per hour.
Mr Trump faces Democratic challenger Joe Biden in the 3 November election.
