INDIANAPOLIS — Indiana’s chief elections official says thousands of voter registrations have been altered, raising concerns about possible fraud.

Secretary of State Connie Lawson said in a statement Tuesday that Indiana’s online voter registration database wasn’t hacked but records were changed on paper forms, online and at Bureau of Motor Vehicles offices.

Lawson, a Republican, says the Statewide Voter Registration System has not been compromised.

Voters contacted the secretary of state’s office after discovering their dates of birth or first names were incorrect on state voter rolls. That prompted the office to run a report in the statewide system and it found that thousands of registrations had been altered.

The office has turned over its findings to Indiana State Police, who already were investigating possible voter registration fraud in 56 counties.