Only 17% of about 2,500 voter registration applications the Lancaster County district attorney was reviewing have been found to be fraudulent so far, county officials said Monday. Another 26% are still being reviewed and 57% were verified as legitimate applications.

A county district attorney in Pennsylvania announced earlier this week that he is investigating 30 voter registration forms with irregularities.

An unspecified number of voter registration forms were flagged as fraudulent, Lancaster County officials said in a news conference.