Prosecutors on Wednesday expanded their case against the police who were at the scene of George Floyd’s death, charging three of the officers with aiding and abetting a murder and upgrading the charges against the officer who pressed his knee on Floyd’s neck to second-degree murder.

Crump said Elison had told the family he would continue his investigation into Floyd’s death and upgrade the charge to first-degree murder if warranted.

Earlier Wednesday, in a visit to a makeshift shrine at the street corner where Floyd died, his family had again called for the arrests of Lane, Kueng and Thao, a demand echoed by their attorney.

Some of the rockiness of the days since Floyd’s death May 25 dissipated on Tuesday night, with demonstrations continuing around the country, but without major reports of violence.

New York police said about 280 people were arrested on protest-related charges Tuesday night, compared with 700 a day earlier.