The missile that took down Malaysia Airlines Flight 17, which killed 298 people in 2014 was launched from Russia's 53rd anti-aircraft missile brigade from a farm near Pervomaisk, Ukraine, investigators announced Thursday.

Why it matters: This is the most specific information investigators have released to date on Russia's involvement in the incident, and it "raises questions such as to whether the brigade was actively involved in downing MH17," head prosecutor Fred Westerbeke said at the news conference, per CNN.