A Brockton man held in a county jail since a traffic stop Sunday was found to have 10 active arrest warrants, including one in a rape in 2001 in Saugus. Lorenzo Echevacia, 39, was arrested by a state trooper on Interstate 95 Sunday in Wakefield on charges of driving without a license and providing false motor vehicle documents. The trooper suspected that he provided her with a false identity, and State Police were able to identify him, even though they said Echevacia had deliberately altered his fingerprints. The FBI later told State Police about the warrants and said that Echevacia had reentered the United States illegally after being deported in 2004. The FBI also said he had used a dozen aliases. Echevacia was arraigned on the motor vehicle charges in Malden District Court and was then taken to Middlesex Superior Court to answer the warrants, including several for drug charges.