A request that Independence police check on a man's well-being on Thursday ultimately led to investigators searching the man's home for explosive material Friday afternoon.

Using a robot and a bomb-sniffing dog, investigators sifted through the house and a large detached garage in the 3000 block of South Vermont Avenue without finding any suspicious material. They cleared the scene shortly after 8 p.m. and re-opened Vermont, which had been blocked off between Sheley Road and 32nd Street for through traffic.

The man, whose identity was not released, had been located Thursday evening in his vehicle near Whiteman Air Force base in Knob Noster, Missouri, and because of explosive material found in his vehicle and a statement he made to officers there while being detained, IPD had reason to believe there might be explosive material in his house in central Independence.

Police did not specify what explosive material they had been looking for.

According to police, concerned family members had asked police Thursday for the well-being check because the man suffered from a mental illness and had made some “unsettling” statements. After IPD did not find him at home, they put out a notice to outside agencies and the man was located near Whiteman. In a release, Knob Noster police said they had assisted IPD with a stop and requested help from several agencies.

The man was still detained in Johnson County during Friday's search, which began after officers received a warrant Friday afternoon. They had posted an officer to watch the residence overnight Thursday into Friday.

Police contacted residents in the immediate area about the situation Friday but did not call for any evacuations. Two agents from the FBI assisted with the search, and the bomb-sniffing dog came from Kansas City police. Independence firefighters had been on standby at nearby Three Trails Elementary while investigators searched the house.