Source: (Reuters; Yahoo)

United States law enforcement saw firearm related deaths of officers rising by 56 percent in 2014 in comparison with 2013.

According to the National Law Enforcement Officers Memorial Fund, roughly one-third of those officers were killed in ambush.

According to the fund,

Altogether, 126 law enforcement officers died in the line of duty in 2014, a 24 percent increase from 2013, when 102 officers were killed.

The second most common cause of death for officers in 2014 was traffic-related incidents.