A memorial service is being held today at Prairie View A&M University in Texas for Sandra Bland, the 28-year-old African-American woman who died last week in a Waller County jail cell three days after she was pulled over for a traffic violation. Authorities said she committed suicide in her jail cell, a claim her family has rejected. On Monday, Waller County District Attorney Elton Mathis said, “It is very much too early to make any kind of determination that this was a suicide or a murder because the investigations are not complete. This is being treated like a murder investigation.” Also on Monday, the lawyer for the Bland family described newly obtained dash cam footage of the arrest, which shows that the police escalated a routine traffic stop by ordering Bland to extinguish her cigarette.

Cannon Lambert, Bland family lawyer: “The dash cam video shows that the officer makes the stop, shows him approach from the passenger side and ask for a driver’s license and insurance, which she gives him. He goes back. He runs her name. He approaches her again after doing so, on the driver’s side. He asks her to put out a cigarette. She says, 'Why do I have to put out a cigarette when I'm in my own car?’ And that seemed to irritate him to the point where he said, 'Get out of the car.'”

The officer who arrested Sandra Bland has been put on desk duty for violating traffic procedures during the stop.