Here are five things you must know for Friday, Sept. 15:

1. -- U.S. stock futures turned lower on Friday, Sept. 15, after North Korea fired another missile over Japan and police in London declared a terrorist incident had taken place on a busy commuter train at the height of the city's morning rush hour.

European stocks also fell and Asian markets were mixed following the missile launch from North Korea that came just days after the United Nations agreed to tougher sanctions on Pyongyang.

U.S. Secretary of State Rex Tillerson said that "continued provocations only deepen North Korea's diplomatic and economic isolation," and urged tougher sanctions on the rogue nation. The U.N. Security Council is expected to meet later Friday to discuss the situation.

In London, stocks fell sharply after the London Metropolitan Police issued a statement that said there were a number of "people who have suffered injuries" in the train incident. The latest reports said 18 people had been injured.

"It is too early to confirm the cause of the fire, which will be subject to the investigation that is now underway by the Met's Counter Terrorism Command. The station remains cordoned off and we are advising people to avoid the area," officials said in a statement. 

U.S. investors will be awaiting an economic calendar on Friday that includes Retail Sales for August at 8:30 a.m. ET, Industrial Production for August at 9:15 a.m., and Consumer Sentiment for September at 10 a.m. 

The Dow Jones Industrial Average on Thursday, Sept. 14, set its third straight record close. The S&P 500 and Nasdaq weren't as lucky as they fell and snapped their own record-breaking streaks.

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2. -- Alphabet Inc. (GOOGL) - Get Alphabet Inc. Class A Report  has been considering an investment in Lyft Inc., according to multiple reports.

The parent company of Google reportedly has held talks to invest about $1 billion in the ride-sharing company. Bloomberg first reported the possible deal on Friday.

The investment may come from Google or CapitalG, Alphabet's private-equity arm, people familiar told Bloomberg, though there is no certainty of the deal.

If it comes to fruition, the deal could be a sign that Alphabet is losing confidence in scandal-ridden Uber Technologies Inc. Alphabet invested $258 million in Uber through its GV venture capital arm in 2013. However, tension has grown between the companies as Alphabet unit Waymo has sued Uber over self-driving car technology.

Lyft only operates in the U.S., and was last valued at about $7.5 billion. 

Separately, The Wall Street Journal reported that SoftBank Corp. (SFTBY) has held talks with both Uber and Lyft about possible investments. The Japanese company is reportedly nearing a deal with Uber to buy more than $10 billion in stock.

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3. -- Google has been accused in a new lawsuit of gender-based pay discrimination.

A lawyer representing three female former Google employees said he was seeking class-action status for the claim, the Associated Press reported.

The suit, filed Thursday in San Francisco Superior Court, follows a federal labor investigation that made a preliminary finding of systemic pay discrimination among the 21,000 employees at Google's headquarters in Mountain View, California. The initial stages of the review found women earned less than men in nearly every job classification, the AP noted.

Google has disputed those findings and said its analysis shows no gender pay gap.

The three women suing Google all quit after being put on career tracks they claimed would pay them less than their male counterparts. The suit aims to represent thousands of Google employees in California and seeks lost wages and a share of Google's profits, according to the AP.

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4. -- Shares of Oracle Corp. (ORCL) - Get Oracle Corporation Report  fell 4.3% in premarket trading on Friday after the computer software giant signaled slower growth in its cloud business.

The stock initially rose after Oracle reported better-than-expected earnings and revenue in its fiscal first quarter on Thursday but then declined after the company said it expected total cloud revenue to increase 39% to 43% in the fiscal second quarter, down from last quarter's growth of 51.4%.

The company, however, said it expects cloud bookings to grow.

"I expect Q2 cloud booking growth to be strong or stronger than our Q1 growth rate," co-CEO Mark Hurd said on an a call after the earnings were released.

5. -- Rovio Entertainment Corp., the maker of Angry Birds, announced on Friday the initial price range for its proposed initial public offering, valuing the company at around $1 billion.

The company set out a price range of between €10.25 and €11.50 a share for the IPO, which will take place in Finland. The range gives the company a market capitalization of between €802 million ($955.5 million) and €896 million. 

The company is expected to start trading on the NASDAQ Helsinki Stock Exchange in the beginning of October, under the sign ROVIO.

Rovio launched Angry Birds as a mobile game in 2009 and it is now one of the most recognized brands in the world.

Updated from 6:03 a.m. ET.

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