Here are five things you must know for Monday, Oct. 2:
The Las Vegas Metropolitan Police Department had said earlier that the suspected shooter had been taken down and didn't believe any others were involved. However, Sheriff Joseph Lombardo later said the shooter's suspected companion, named as Marilou Danley, was still at large in the city.
A Nevada sheriff said one on-duty officer was in critical condition and another was wounded, the Associated Press reported.
Lombardo said two off-duty officers died.
Stocks also closed out both September and the third quarter with gains. The S&P 500 rose 1.9%, its sixth straight month of gains. The Dow increased nearly 2% and the Nasdaq roughly 1%. During the third quarter, the S&P 500 has climbed more than 3%, the Dow 4.8%, and the Nasdaq 5.7%.economic calendar in the U.S. includes the PMI Manufacturing Index for September at 9:45 a.m. ET, the ISM Manufacturing Index for September at 10 a.m., and Construction Spending for August at 10 a.m.
Company officials will meet with the House and Senate intelligence committees and the Senate Judiciary Committee on Monday to hand over the ads, a Facebook official told the Associated Press.
Reports emerged in September that attempts were made by Russian operatives to use Facebook to spread misinformation and divisive political rhetoric. The social media company said it found 450 accounts and about $100,000 was spent on the ads.
Twitter Inc. (TWTR - Get Report) has said it found postings linked to those same accounts, and the House and Senate intelligence panels have asked both companies, along with Alphabet Inc.'s (GOOGL - Get Report) Google, to testify publicly in the coming weeks.
None of the companies have said whether they will accept the invitations, the Associated Press noted.
"We have reached an agreement in principle and have extended the deadline accordingly to try and finalize the terms," Altice said in an e-mailed statement.
Disney had warned that it might withdraw its channels from Optimum cable-TV service if talks reached an impasse. A blackout would have affected about 3.1 million subscribers in the New York metropolitan area.
Altice USA was created following its French owners' acquisition last year of Cablevision Systems Corp. and Suddenlink Communications Inc., though the contract talks only affected former Cablevision subscribers. Altice's total footprint reaches 4.9 million subscribers in 21 states.
5. -- U.K. airline stocks surged Monday after discount carrier Monarch Airlines PLC effectively filed for bankruptcy protection late Sunday.
Low-cost airline Easyjet PLC (ESYJY jumped 3.5% and budget carrier Ryanair PLC (RYAAY - Get Report) rose 2.5% on Monday. The owner of British Airways, International Consolidated Airlines Group (ICAGY , gained 1.5%.
Monarch, the low-cost airline and packaged tour operator fell into administration because of mounting costs and the increasing competitive nature of low-cost air travel, making it the biggest U.K. airline to cease trading.
All flights have been grounded, leaving 110,000 passengers stranded abroad. The administrators and the Civil Aviation Authority were working to repatriate the passengers over the next two weeks.
Updated from 6:01 a.m. ET.
More of What's Trending on TheStreet: