Former Portuguese rider Perdro Lopes has been handed a 15-year suspension after being found guilty of a second doping violation.

Portugal’s cycling federation announced Wednesday that a disciplinary committee issued the suspension after the now-retired Lopes failed to inform anti-doping officials of his whereabouts three times in 18 months.

Lopes was crown as Portugal’s national champion in 2004, but subsequently tested positive for a stimulant.

Lopes turned pro after representing Portugal at the 1996 Olympics in Atlanta, Georgia.

In other action, the Portuguese disciplinary panel suspended rider Joao Benta for three years after he tested positive for CERA late last year. The panel also suspended rider Ludovic Batista for two years after he, too, had failed to inform authorities regarding his whereabouts on three separate occasions.