Who dumped the dope?

That's the question of the day along the coast of Southern California as authorities try to figure out how four tons of marijuana — more than 150 bales — got into the Pacific Ocean near Orange County's Dana Point Harbor. They were found this weekend about 15 miles out to sea.

After its much-ballyhooed initial public offering on Friday ended with the stock's price just about where it started, Facebook ended sharply lower today.

Just after the start of trading, the social media giant's shares were trading around $33, down 13 percent about $5 from Friday's close. At close, it ended 11 percent lower at $34.03.

Good morning.

Our early headlines:

-- Dozens Killed By Suicide Bomber In Yemen.

-- Pakistan Threatens To Overshadow NATO Summit.

-- Eclipse Of The Sun: Did You Fall Into The Ring Of Fire's Path?

As President Obama and other NATO leaders wrap up a two-day summit today in Chicago, the ongoing dispute with Pakistan over reopening supply routes from that country into Afghanistan threatens to "put a crimp in the Obama administration's efforts to lay out a clear strategy for winding down the war in Afghanistan," NPR's Jackie Northam tells our Newscast desk.

It's been another deadly day in Yemen:

According to the BBC: "At least 63 people have been killed in a suicide bomb attack during a rehearsal for a military parade in the Yemeni capital, Sanaa, officials say. The assailant, who was reportedly wearing an army uniform, blew himself up among a group of soldiers at al-Sabin Square, near the presidential palace."