American cyclist Lance Armstrong, who was stripped of his seven Tour de France titles for doping, is ineligible for a masters swimming competition in Texas, the event's sanctioning body said on Thursday.

The Austin American-Statesman said earlier that Armstrong had withdrawn from the April 5-7 South Central Zone Championship in Austin, Texas, after organizers informed his agent that the world swimming governing body FINA had ruled that he could not compete.

"After discussion with United States Aquatic Sports and FINA, it was agreed that although Mr Armstrong is eligible for membership in US Masters Swimming, he is not currently eligible to compete in sanctioned swimming competitions, regardless of the type of course," US Masters Swimming said in a statement.