Portland police arrested a 30-year-old man Saturday in connection with Friday night’s assault and robbery of a woman walking along Southeast 11th Avenue and Siskiyou Street.

Nathan Mosley was charged with first-degree robbery, fourth-degree assault and being a felon in possession of a firearm. He is being held at the Multnomah County Detention Center on $257,500 bail.

Mosley was the suspect in an attack on a woman at about 7:39 p.m. Friday, Sept. 28. Police said a 29-year-old woman was pistol-whipped and robbed of her purse by a man later identified as Mosley.