Metallica vocalist James Hetfield had warned things could get perilous at the start of the band's fifth tour of Mexico, saying "We're very focused on how dangerous this show is."

The audience of more than 22,000 believed it too. Many of the fans were visibly terrified Saturday night as the band re-enacted its burn-down-the-stage performance from 1998's "Cunning Stunts" video album.

Gunmen loyal to ousted Yemeni ruler Ali Abdullah Saleh on Sunday seized a security building near the Interior Ministry in the capital for a few hours before vacating it, a security official said.

The official said the gunmen were sent by a former security official and a relative of Saleh. After taking over the building in Sanaa, they blocked off the airport highway where it is located.

NBC's Bob Costas noted a controversy over honoring Israeli athletes killed at the Olympics 40 years ago during his coverage of the opening ceremony Friday but stopped short of offering his own protest.

The International Olympic Committee had declined a request to hold a moment of silence during the ceremony to acknowledge the 11 Israeli athletes and coaches killed by Palestinian gunman in Munich in 1972. Costas called that decision insensitive during an interview this month and indicated he would call for his own moment of silence when Israeli athletes marched into the Olympic Stadium Friday.

The producer of this year's Emmy Awards said it's a challenge to decide who to include in the ceremony's memorial tribute.

About three-dozen stars and other industry notables typically are honored in the "in memoriam" segment, although many more are deserving, executive producer Don Mischer said Friday.

Apple and Samsung are set to square off in a California court Monday in what is seen as the biggest patent U.S. trial in recent memory.

Apple is seeking more than $2.5 billion in a case accusing the South Korean firm of copying designs and other patents from the iPhone and iPad maker in the trial in San Jose, California, federal court.

Beijing on Friday denied accusations of solar panel dumping, saying it hoped Chinese and EU manufacturers could negotiate an end to a dispute that threatens a trade war.

EU ProSun, a group of more than 20 European solar panel makers, suspects Beijing of providing their Chinese rivals with loans and other subsidies enabling them to sell their goods below cost.

Facebook's stock hit a new low Friday after it reported lukewarm second-quarter results and didn't give an outlook for the coming months.

The stock fell $2.88, or nearly 11 percent, to $23.97 in afternoon trading Friday, after earlier trading as low as $22.28.

Amazon.com founder and CEO Jeff Bezos and his wife, MacKenzie, announced Friday they are donating $2.5 million to the campaign to defend Washington's same-sex marriage law.

With the gift, Washington United for Marriage has raised more than $5 million for its referendum campaign.

Six suspected rebels, including three women, have been killed in a security sweep in Russia's restive North Caucasus, the interior ministry said on Friday.

The ministry's spokesman in the Caspian Sea province of Dagestan, Vyacheslav Gasanov, said special forces cornered the suspects in a private house in the regional capital, Makhachkala. He said they refused to surrender and five of them were killed in a skirmish on Friday.

Australia will play Lebanon in a football friendly in Beirut on September 6 in a final build-up to its World Cup qualifier against Jordan five days later.

Coach Holger Osieck said he will use the match — the first ever between Australia and Lebanon — to fine-tune his squad for the match against Jordan in Amman on Sept. 11.