St. Paul police have arrested a 42-year-old woman and 24-year-old man with extensive criminal histories in connection with the fatal shooting Sunday of a young St. Paul mother on the city's East Side.

Sarah Anne Wierstad, 24, was shot just steps from her house in the Railroad Island area as she was returning home from work. Wierstad, the mother of a 5-year-old girl, worked two jobs and was attending school in hopes of becoming a chef.

According to the Ramsey County jail, police on Tuesday arrested the 42-year-old woman on suspicion of murder.

The woman pleaded guilty to second-degree murder in 1998 for her part in a drive-by shooting in Anoka County in which she drove her brother past a Coon Rapids house as he fired a shotgun, hitting and killing a man as he slept inside. According to the Minnesota Department of Corrections, the woman got out of prison in 2013 and was on supervised release when arrested this week.

Also arrested Tuesday was a 24-year-old man with a criminal history that includes convictions for aggravated robbery and trespassing.

As of Wednesday afternoon, the suspects had yet to be charged. The Star Tribune generally does not name suspects until they are charged.