Charges against a Minneapolis man have been upped to second-degree murder after a St. Paul woman died from being stabbed in a Minneapolis parking garage next to Target Field.

Investigators are describing the incident as a mugging of four women by a knife-wielding man.

On Friday, the Hennepin County attorney’s office charged Benjamin Love, 44, of Minneapolis with second-degree murder, without intent, while committing a felony. The charge is in addition to assault and three counts of aggravated robbery Love had already been charged with.

The Hennepin County medical examiner’s office identified the woman Friday as Mai Yer Cha, 31, from St. Paul’s East Side.

She died Wednesday, the result from being stabbed in the heart during the robbery. She was trying to protect another woman from the mugger, according to prosecutors.

The robbery happened before 1 a.m. Saturday, July 15.

According to a criminal complaint:

Mai Yer Cha and three other women had spent a Friday evening in downtown Minneapolis. They had parked in the fourth floor of Ramp B, located at 516 Second Ave. N., just beyond Target Field’s right-field bleachers.

Shortly before 1 a.m., they took the parking ramp’s elevator. A man got onto the elevator with them. Elevator video captured the women getting off the elevator at the fourth floor, and just before the doors closed, the man put out his hand to stop the doors, and exited the elevator.

According to the women’s accounts, the man showed a small knife as he tried to yank the purse off one of the women. Then he grabbed a second woman by the hair, held the knife to her throat and demanded that woman’s purse.

The other women tried to pull the woman away from the robber’s grasp, and he sliced her hand with the knife.

According to the criminal complaint, one of the women — presumably Mai Yer Cha — “tried to intervene,” and the man stabbed her in her chest. The knife punctured her heart, fatally. Related Articles Former St. Thomas student pleads guilty to hoax bomb threat

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The robber fled with one purse. Video surveillance shows the man leaving with a purse, according to the charges.

The video cameras in the parking garage helped lead investigators to Love, and one of the women later identified him in a police lineup.

Love, who had an outstanding warrant in connection with an aggravated robbery with a knife from August 2016, remains jailed in lieu of $1 million bail.

The Hennepin County jail has not released Love’s booking mug shot.

Mai Yer Cha worked as a Comcast customer care agent in Minnetonka, according to the company.

“We are heartbroken by the tragic loss of one of our employees,” Comcast said in a statement. “Our thoughts and deepest sympathies go out to her family and friends during this most difficult time, including the many people she worked with here at Comcast. We are offering counseling to employees who are grieving.”