A federal judge sentenced a Washington, D.C. police officer to 18 months in prison on Friday for obstructing justice and lying about his relationship with the former leader of the right-wing group, Proud Boys, Enrique Tarrio.

A jury found Lt. Shane Lamond guilty in December last year of leaking details to Tarrio about an investigation into the burning of a Black Lives Matter flag during a protest in D.C. He was convicted of one count of obstruction of justice and three counts of making false statements.