Investigators expect to rule out arson as the cause of a fire that killed 10 people at a group home for the elderly and mentally ill, a police spokesman said Tuesday.

Sgt. Jason Clark of the Missouri State Highway Patrol said he did not "foresee that something through the night will lead us to believe that this is an arson investigation."

Clark said authorities do not have any suspects or persons of interest in connection with Monday's blaze at Anderson Guest House. He declined to answer any other questions about investigators' findings.

Investigators scheduled a Wednesday news conference to discuss the fire.