Published: Mar 10, 2014 3:22 PM EDT

MIAMI (AP) - An associate of former U.S. Rep. David Rivera has pleaded not guilty to four campaign finance violations involving alleged illegal contributions to a previously unknown candidate.
    
Ana Alliegro's attorney Mauricio Padilla entered the plea Monday on her behalf. Padilla also said Alliegro would not seek release on bail, which is opposed by prosecutors who claim she is a flight risk.
    
An indictment charges Alliegro illegally funneled more than $80,000 to the 2012 primary campaign of Democrat Justin Lamar Sternad, a political novice who pleaded guilty last year to federal campaign violations. The investigation centers on allegations that Rivera, a Republican, was using Sternad to weaken his Democratic rival and eventual winner, U.S. Rep. Joe Garcia.
    
Rivera has repeatedly denied wrongdoing and did not immediately return a call Monday seeking comment.

(Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)