A woman has been arrested after an armed robbery in Saugus.
According to police, Siara Fonseca, 32, of Lynn, is charged with armed robbery, assault and battery and assault with a dangerous weapon.
Police responded to 20 Houston Avenue just before 2 p.m. Friday for a report of a robbery.
Upon arrival, officers learned that a woman, later identified as Fonseca, had approached the victim with a knife and stolen his cellphone.
Authorities located her at the intersection of Washington and Broad streets in Lynn.
Police say she was taken into custody without incident.
Fonseca is being held without bail pending arraignment. It is unclear if she has an attorney.