COLUMBUS (WCMH) – A Columbus man is in custody for murder after allegedly stabbing a woman and child with a large knife.

It happened on June 23 in an alley behind the 200 block of Oakley Avenue.

According to Columbus police, Kristopher T. Amos, 29, approached a group of children and asked them for help finding his lost drone.

Amanda Gibson says her mother, Candy Arthurs, 45, also offered to help look for the drone. Gibson says a few minutes later, her 7-year-old son came running home with a stab wound to his shoulder. Then Arthurs staggered back to the home with a stab wound to her chest.

Gibson says her 8-year-old daughter could not really explain what happened.

“She says they were just walking down the alley just looking and the next thing they know she’s got my mom in her face pushing her and telling her to run and that’s all she could tell me,” Gibson said.

Police believe it was Amos who pulled out a large knife and stabbed Arthurs and the 7-year-old. The child was treated at Nationwide Children’s Hospital and is expected to fully recover.

Arthurs was taken to Mount Carmel West Hospital where she died early Wednesday morning.

Amos is a registered sex offender for a 2010 conviction for child enticement. He was arrested Wednesday morning on charges of murder and felonious assault.

Several children in the neighborhood told WCMH they found the drone the next day in the backyard of a home near where the stabbing occurred.