U.S. stock futures came off highs Monday after officials confirmed an explosion at New York's Port Authority.

The suspected bomber was the only reported injury from the explosion and he is currently in police custody, according to the New York Police Department.

Wall Street was headed for another day of records prior to news of the explosion as investors headed into what is likely to be the final full week of trading of the year amid of a busy slate of central bank meetings and economic data as well as the launch of bitcoin futures and cryptocurrency mania.

Wall Street was looking ahead to this week's policy meeting of the Federal Reserve -- the final gathering of the year -- and bets that Republican lawmakers will be able to deliver a comprehensive tax reform bill for Donald Trump to sign before the end of the year.

Investors also will navigate a busy week of economic data, including producer price figures on Tuesday, Dec. 12, headline inflation Wednesday, Dec. 13, and retail sales and industrial production readings Thursday, Dec. 14. The corporate earnings schedule is relatively light by comparison, but Thursday will see three major quarterly releases from Adobe Systems Inc. (ADBE - Get Report) , Costco Wholesale Corp. (COST - Get Report) and Oracle Corp.  (ORCL - Get Report) . 

The week's big story, however, is undoubtedly the launch of bitcoin futures, which surged on their first day of trading and extended gains into Monday, taking spot prices for digital currencies higher as exchange regulators halted dealing twice in order to tame market volatility.

The maiden futures contract, which settles for cash on Jan. 18, opened at a price of $15,460 and promptly fell $40 until prices rebounded to as high as $18,850, according to CBOE data, before easing to around $17,780 with 2,865 contracts changing hands. Spot bitcoin prices on the bitsmap exchange were also trading higher, reaching a 24-hour high of $16,478.

Oil prices in the U.S. rose early Monday, up 0.24% to $57.50 a barrel, after trading lower earlier in the session.

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