Three detainees escape after killing guard in NE China  

黑龙江延寿县看守所3名在押人员逃跑

This combo photo shows the ID information of three escaped detainees in Heilongjiang province. (Source: Chinanews.com)

(ECNS) -- Three detainees killed a police guard at a detention center in Yanshou county, Harbin city, Heilongjiang province, at about 6 am on Tuesday, according to the county's propaganda department.

All three men were wearing police uniforms when they escaped.

Further investigation is underway.