Unrest continues in Ferguson, Mo., following the fatal shooting of 18-year-old Michael Brown.

Early Wednesday, a St. Louis County police officer allegedly shot a man who, police said, pointed a gun at an officer near the site where protesters had rioted, according to news reports. The man was critically wounded.

At about 1 a.m., police responded to a call reporting that four to five men in ski masks were armed with shotguns and that there was gunfire. When officers arrived at the scene, they saw “multiple subjects running,” police spokesman Brian Schellman told the St. Louis Post-Dispatch. One officer allegedly chased a suspected shooter.

When an officer approached the man, he pulled a handgun on the officer. The officer then fired at the man, Schellman told the newspaper.

Police said they recovered the gun at the scene, and the man was transported to a local hospital.

In a separate shooting incident about a half an hour earlier, a woman was reportedly shot in the head during a drive-by shooting near a QuikTrip gas station that was looted and burned late Sunday. She is expected to survive, according to KTVI-TV. Police told the Post-Dispatch they were looking for four or five men in connection with the incident. It was unclear if the shooting was related to ongoing riots.

Some protesters gathered after midnight and police threw tear gas, the Post-Dispatch reported.

Police did not immediately return a request for comment Wednesday morning.

The Post's Wesley Lowery tells PostTV what it was like on the ground in Ferguson, Mo., on Monday, two nights after an unarmed 18-year-old named Michael Brown was shot and killed by a police officer. (Sarah Parnass and Nicki DeMarco/The Washington Post)