Michigan City authorities are investigating a shooting that left Jon Samuelson critically injured Friday morning inside Franciscan Health Michigan City.

According to Indiana State Police, the incident occurred around 7 a.m. at the hospital located in the 3500 block of Franciscan Way.

Investigators said Samuelson, a 33-year-old K9 officer and 12-year veteran of the LaPorte County Sheriff’s Office, was on his way to a training session when he encountered a disabled vehicle along State Road 2 near 900 West in LaPorte County.

Authorities say the driver, identified as Sharon Grafton Jr., 22, of Chicago, requested transportation to the hospital. Samuelson reportedly drove him to the emergency room at Franciscan Health.

Approximately five minutes later, investigators say Samuelson learned Grafton Jr. was allegedly connected to criminal activity at another location. Law enforcement sources indicated the suspect may have been involved in a domestic-related carjacking earlier in Chicago before FLOCK camera systems reportedly tracked the vehicle entering Indiana.

When Samuelson attempted to speak with or arrest Grafton Jr. inside the emergency department, authorities say the suspect opened fire, striking the deputy three times.

Samuelson was airlifted to a hospital in South Bend, where he remains in critical condition.

Indiana State Police said Samuelson comes from a longtime law enforcement family. His father, a retired Michigan City police officer currently working hospital security, was reportedly present during the incident. Samuelson’s grandfather previously served as chief of police in LaPorte.

Authorities confirmed Samuelson is married and has no children.

Grafton Jr. was taken into custody and is expected to be held at the Porter County Jail pending further proceedings.

In a statement following the shooting, Franciscan Health said there is no active threat to patients, staff, or the public. The hospital noted that its emergency department temporarily remained on ambulance bypass while walk-in patients continued to be accepted through the main entrance. Officials also stated that physician network offices on site were closed temporarily while other hospital services remained open.