The world is a better place now that Libyan dictator Col. Moammar Gadhafi is dead, former Massachusetts Gov. Mitt Romney (R) said.

"It's about time," Romney said to Iowa radio station KSCJ in response to early reports that Gadhafi had been killed. "The world is a better place without Moammar Gadhafi."

On Thursday, the Libyan National Transitional Council announced that Gadhafi had been killed during fighting in his hometown of Sirte, Libya.

"Moammar Gadhafi was a tyrant who terrorized the Libyan people and shed American blood, and the world is a better place without him," Romney tweeted later on Thursday.

Alicia M. Cohn contributed.