I have never heard of this group until now…
A Facebook community dubbed ‘Black Power Political Organization’ has allegedly claimed responsibility for the attack, according to screen captures posted on Twitter and Facebook. The group’s page on Facebook appears to have been deleted or blocked.
According to the screen grabs, the group promised to “assassinate” more police officers “in the coming days.”
There is no official comment on this.

Screenshot Via Facebook
Source: Red Flag News, Youtube