AIRMONT CITY, ILL. – An Illinois family is demanding police do more after they said their loved one fell into the Mississippi River.

They said it happened as he was being chased by police Wednesday night over the Stan Musial Veterans Memorial Bridge.

They’ve identified their loved one as 52-year-old Shane Barendregt. They fear authorities gave up too soon on their search efforts and are holding out hope that Barendregt might still be alive.

Illinois State Police said they have conducted aerial searches for the adult man that went into the river Wednesday.

They also said the St. Louis and Columbia, Illinois, fire departments conducted searches via boat and that the coast guard was also contacted.

They added that the incident is still under investigation and that no more information is available at this time.