TUCSON, Ariz. — Tucson Police say a 46-year-old Leticia Freitag is in custody after a homicide investigation on the city's east side Sunday morning.

Police say it started when they got a call about shots fired on the 7200 block of East Elbow Bay Drive. At the scene, they found four people in the home -- two adults and two children. One of the adults -- 48-year-old Michael Freitag -- had been shot, and he was rushed to the hospital. He later died.

Leticia faces one count of second-degree murder. She is held at the Pima County Jail with a one-million dollar bond.

She is expected to be arraigned on January 16.

This is a developing story. Stay with KGUN 9 for the latest updates.