The Keokuk Police Department is investigating an incident early Friday morning at the Keokuk Area Hospital.
Few details are being released about what happened.
A KPD spokesperson said someone came into the hospital early Friday morning and made threatening comments.
The nature of those comments have not been released.
A spokesperson with the Keokuk Health Systems responded with a statement when asked about what happened.
"We had a security incident at the hospital," media relations spokesperson Amy Conlee said. "We followed normal procedure. We are not releasing any other information at this time. Right now, this is all we have to say about this matter. I can't tell you if any information will ever be released about it. We are following the matter. We will release information if it is necessary."A KPD spokesperson said more details could be released soon as the investigation develops.