June 2 (UPI) -- Colombian President Gustavo Petro reiterated allegations Tuesday of possible electoral fraud in the first round of the country's presidential election, claiming irregularities in the voter registry and vote-counting systems ahead of the June 21 runoff. In a message posted on X, Petro said he was presenting the "verified basis of possible fraud" and claimed he could submit evidence to the relevant authorities. Petro said he has evidence of software modifications that allegedly