VIDEO: Albuquerque Officers Injured at Anti-Trump Protest

"Several" officers were injured after being hit by rocks, and at least one person was arrested in Albuquerque on Tuesday after protests near a Donald Trump event turned violent, according to authorities.

Police threw smoke devices and used what appeared to be pepper spray on crowds, officials said.

At around 8 p.m., protesters opposed to the presumptive GOP nominee rushed past a barricade and officers in riot gear were called in to block the locked entrance of the venue where the rally was being held, reports NBC.

Protesters burned pro-Trump flags and signs and threw rocks and bottles during a brief but tense confrontation outside the Albuquerque Convention Center after Trump was finished speaking, and again later as police tried to move crowds out of the area.

Police said smoke devices were used against the crowds, not tear gas. Some kicked the devices back at officers.

Albuquerque police said on Twitter that there may have been damage to convention center windows by a pellet gun. Albuquerque police spokesman Officer Tanner Tixier said in an interview with MSNBC that police showed "an amazing amount of restraint."

Protesters took over intersections near the convention center and some drivers did "burnouts," spinning tires and filling the streets with smoke, as police in riot gear and officers on horses pushed the crowd along.