Man charged with murdering mother, daughter in Antioch shooting

File photo of handcuffs on table. Close up of metal handcuffs File photo of handcuffs on table. Close up of metal handcuffs Photo: Rafe Swan / Getty Image Photo: Rafe Swan / Getty Image Image 1 of / 28 Caption Close Man charged with murdering mother, daughter in Antioch shooting 1 / 28 Back to Gallery

A 35-year-old man faces charges of murdering a mother and daughter in a double-shooting last week in Antioch, authorities said Tuesday.

Dontay Williams was formerly charged by the Contra Costa District Attorney’s Office five days after Valinda Scott, 55, and Milan Ardoin, 28, were both shot Thursday on the 4400 block of Delta Fair Boulevard just before 4:30 a.m., according to the Antioch Police Department.

Ardoin died at the scene and Scott later died at a hospital while receiving treatment for her injuries, police said.

Investigators identified Williams as a suspect in the homicides and obtained a warrant for his arrest Friday, officials said.

Oakland police officers found Williams in Oakland on Sunday and arrested him, said Antioch police Lt. Desmond Bittner.

Bittner said Williams knew the victims but did not disclose their relationship.

Williams is scheduled to be arraigned Wednesday at the Pittsburg Superior Court, Department 4 at 1:30 p.m., officials said.

Anyone with information about the shooting can call the lead investigator, Detective Bledsoe, at 925-779-6884 or the Antioch Police Department at 925-778-2441. Tips can also be sent by text to 274637 using the keyword “ANTIOCH.”

Lauren Hernandez is a San Francisco Chronicle staff writer. Email: lauren.hernandez@sfchronicle.com Twitter: @LaurenPorFavor