One of two suspects shot and wounded by an Internal Revenue Service agent as they tried to rob her in San Francisco's Bayview-Hunters Point has been charged in federal court with assault, court records show.

Michael Higginbotham, 20, was charged Thursday in U.S. District Court in San Francisco with assault on a federal officer and a gun violation in connection with last month's incident involving the agent, identified in court documents as 36-year-old Dena Crowe. He is to appear in court Tuesday.

About 11:55 p.m. Aug. 4, Crowe was putting items into her department-issued car outside her home on the 100 block of Marlin Court and was preparing to drive to meet her partner for work, authorities said. She was confronted by a teen, identified only as K.M. in court records, who demanded money, and a man, later determined to be Higginbotham, who pointed a Mossberg 12-gauge shotgun at her, investigators said.

In fear for her life, Crowe identified herself as an agent and fired her .40-caliber semiautomatic handgun at the suspects, and both fled on foot after being shot, authorities said. Crowe briefly chased after the juvenile, and her husband grabbed a shovel and chased after Higginbotham, John Hartman, a special agent with the U.S. Department of Treasury Inspector General for Tax Administration wrote in an affidavit.

Crowe and her husband lost the suspects, but K.M. was later found hiding under a stairwell on Jerrold Street. He had been shot in his right pelvis.

Early the next morning, Higginbotham showed up at UC San Francisco Medical Center with a gunshot wound to his left leg. He initially claimed that he had been shot near Market and Turk streets downtown and that his mother had taken him to the hospital from that location, Hartman wrote.

The mother later admitted that she had lied and that she had in fact taken her son to the hospital from her home, about a quarter-mile from where the shooting happened, Hartman wrote.

San Francisco police found the shotgun in a backpack in the backseat of his mother's car, authorities said.