Austin police arrested a man on Saturday suspected of pulling a gun on a pregnant woman during a road rage incident in South Austin.

Police first received reports of the incident around 2:52 a.m. from a woman who turned onto a road in South Austin in front of a BMW that appeared to be speeding. After making the turn, the driver, later identified by police as 35-year-old Matthew Durant, flashed his high-beam lights and gave the woman the middle finger while passing her, according to an arrest affidavit filed over the weekend.

Shortly after, both cars stopped at the traffic light at South Lamar Boulevard and Oltorf Street, the affidavit said.

“(The woman) stated she rolled down the window of her vehicle and asked Durant why he was traveling, at what she perceived to be, a high rate of speed and advised him that he should be more careful because she was pregnant and his behavior puts her at risk,” the document said.

According to the affidavit, Durant then pulled out a black handgun, inserted a magazine and loaded a round into the chamber while he pointed the weapon at the woman.

The woman told police she thought she was going to die. When the light turned green, the man took off down South Lamar Boulevard, the affidavit said. Meanwhile, the woman called police to give a description of the man and his vehicle.

An officer in the area spotted a vehicle matching the description turn from South Lamar Boulevard onto Barton Skyway, then onto Manchaca Road.

Another officer spotted a similar car speeding through the intersection of Stassney Lane and Manchaca Road. That car then cut off another vehicle and slammed on its brakes, police said.

The officer sped after the car, reaching 68 mph for at least two blocks to catch up, police said. The vehicle eventually pulled into a 7-Eleven near Berkeley Avenue and Manchaca.

Another officer arrived to help take Durant into custody, and according to the affidavit, a search of his car turned up a loaded handgun in the glove compartment.

Durant has been charged with aggravated assault, a second-degree felony punishable by two to 20 years in prison and a maximum fine of $10,000.

He was not being held at the Travis County Jail on Monday, jail records show.