HUMBOLDT, Iowa (AP) — Mourners have said their final goodbyes to two store clerks shot and killed in northern Iowa last week.

Funerals were held Monday for Shelia Myers and Vicky Bowman-Hall. Myers was shot and killed at the Kum & Go convenience store in Humboldt on November 15. Bowman-Hall was shot at the Crossroads gas station in Algona about an hour earlier. She died at an Algona hospital.

A Minnesota teen, Michael Swanson, is charged in the slayings. The 17-year-old from St. Louis Park, Minn. is accused of shooting the women to keep them from calling police after they gave him the cash and cigarettes he demanded.

Swanson is being held on $1 million cash bond in the Kossuth County jail.

The Des Moines Register reports that authorities say they don’t know why he was in Iowa.