TAMPA, Florida (CNN) -- TV pitchman Billy Mays' death appeared to be from heart disease, not a bump to the head, according to the Hillsborough County medical examiner.

The final cause of death will not be known until after toxicology results are available, Dr. Vernard Adams said at a Monday news conference.

Mays, 50, was pronounced dead at his home near Tampa Sunday morning, after his wife Deborah found him unresponsive, Tampa police said.

The autopsy conducted Monday morning revealed Mays suffered from hypertensive heart disease, Adams said.

"It's not uncommon to have a sudden death with this kind of disease," Adams said.

Watch medical examiner discuss Mays' autopsy »

"Billy would be overwhelmed to see that his life touched so many people in a positive way," Deborah Mays said in a statement Monday.

"While it provides some closure to learn that heart disease took Billy from us, it certainly doesn't ease the enormous void that his death has created in our lives," she said.

Billy Mays had told a friend before he went to sleep Saturday he was not feeling well.

"He said he was groggy, he wasn't feeling that great. He wanted to get some sleep," Todd Schnitt said.

Watch friends remember Billy Mays »

Mays was on a US Airways flight from Philadelphia that had a hard landing Saturday at Tampa International Airport after the front tire of the plane blew out.

Amnesty Agenda: ID’s for Illegal Aliens
Yet another American city is going to issue ID’s to illegal immigrants. The city council in Oakland, California, has voted for a plan to offer identification cards to everyone who lives in the city, including illegal aliens. Similar programs are already underway in New Haven, Connecticut and San Francisco. Bill Tucker has our report.

Clash of Agendas: Immigration Reform & Gay Marriage
Deep controversy, in the debate over immigration reform… and gay marriage rights. An immigration reform bill called the Uniting American Families act seeks to grant legal residency… to same-sex partners. While gay marriage advocates support the bill, some of those seeking “comprehensive immigration reform” say the bill will doom their cause. Lisa Sylvester reports.

President Obama & Immigration
Controversy over President Obama’s push to delay so-called ‘comprehensive immigration reform’… until next year. Some claim the nomination of Sonia Sotomayor to the Supreme Court is allowing the president to delay a key issue within the Hispanic community. But many are actually frustrated tonight, saying Sotomayor’s nomination is just an excuse to delay a campaign promise. Lisa Sylvester reports.

WASHINGTON -- The National Rifle Association is asking the Supreme Court to strike down strict gun control laws in the Chicago area, setting the stage for another high court battle over Second Amendment protections for gun owners.

Judges on both courts - Republican nominees in Chicago and Democratic nominees in New York - said only the Supreme Court could decide whether to extend last year's ruling throughout the country. Many, but not all, of the constitutional protections in the Bill of Rights have been applied to cities and states.

The framers of the Constitution intended "to protect the right to keep and bear arms and other rights from state infringement," the NRA said in a filing made available at the court Thursday.

One federal appeals panel, from the 9th U.S. Circuit Court of Appeals in San Francisco, has ruled that the Second Amendment does apply broadly. That court, however, is considering whether to take another look at a dispute between Alameda County and gun show promoters.

In the case now pending at the Supreme Court, the 7th U.S. Circuit Court of Appeals upheld ordinances barring the ownership of handguns in most cases in Chicago and suburban Oak Park, Ill.