Anonymous threatens retaliation after Texas police kill 17-year-old girl

The shooting death of Kristiana Coignard, 17, on Jan. 22, 2015, in the lobby of the Longview police station is under investigation by the Texas Rangers. (Facebook) The shooting death of Kristiana Coignard, 17, on Jan. 22, 2015, in the lobby of the Longview police station is under investigation by the Texas Rangers. (Facebook) Image 1 of / 18 Caption Close Anonymous threatens retaliation after Texas police kill 17-year-old girl 1 / 18 Back to Gallery

Three Longview police officers have been placed on administrative leave after a 17-year-old girl was shot to death in the police station lobby, according to the Marshall News Messenger.

Officials have identified the teenager as Kristiana Coignard, a former student in the Pine Tree school district. She was shot multiple times about 6:30 p.m. Thursday, the News Messenger reported.

The hacker group Anonymous has threatened retaliation against the city for the shooting and claimed to have already attacked the city's website, according to Inquisitr.

The Longview Police Department's Facebook page has this entry about the incident:

"On January 22, 2015 at 6:28 p.m., Longview Police were dispatched to the front lobby of the Police Department for an Unknown Problem. When Officers arrived they were confronted by a white female who threatened them. The suspect brandished a weapon, made threatening movements toward the officers and was shot. The suspect was transported to Good Shepherd Medical Center where she were pronounced dead by a Justice of the Peace. The Texas Rangers have been called in to investigate this shooting."

Police have not released any video or audio recordings of the incident, although they have acknowledged that such documents exist, Inquisitr reported.

The girl's aunt, Heather Robertson, told ThinkProgress that Coignard had struggled with mental illness since her mother's death when the girl was 4 years old. Coignard had also attempted suicide "multiple times," Robertson told the publication.

Longview Mayor Jay Dean said he was told that Coignard was carrying a knife, according to the "Hit And Run" blog at Reason.com.