Florida police said on Friday an "anti-government" man may have broken into his mother-in-law's home, tied her up, and fled with his two young sons, ages 4 and 2. The man, Joshua Hakken, 35, and his wife, Sharyn, 34, are now thought to be at sea in a 25-foot, 1972 Morgan sailboat. An amber alert has been issued and the Coast Guard searched a swath of sea spreading from Key West to Mobile, Alabama. "We're not gonna eliminate our land search, we're still maintaining the Amber alert. We're now expanding it into the Gulf of Mexico," said a Hillsborough County Sheriffs spokesman.