Additional security measures for the Boston Marathon announced

The 2014 Boston Marathon will be the 118th running of the event. (Darren McCollester/Getty Images)

Around 3,500 law enforcement officials and several hundred members of the National Guard will be a part of the security team for the 2014 Boston Marathon, according to Katherine Q. Seelye and Timothy Williams of The New York Times.

Officials say they have also added bomb-sniffing dogs and surveillance cameras along the course, and that they will be requiring runners to check all their belongings and place them in clear plastic bags provided by the Boston Athletic Association. The New YorkTimes reports that spectators are also being asked to abide by some new restrictions after last year's bombings, which killed three people and injured more than 250 others.

Organizers this year have also prohibited a wide range of material out of safety concerns, including containers larger than one liter; baby strollers; vests with pockets; costumes that cover the face; signs and flags larger than 11 inches by 17 inches; and any item larger than 5 inches by 15 inches by 5 inches

The race, which is scheduled to take place on April 21, is expected to have 36,000 participants, 9,000 more than 2013.

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