Officers called to investigate some suspicious packages left at a West Knoxville business ended up discovering more than 317 pounds of cocaine, police announced Monday.

The drugs have an estimated street value of $4.32 million, the Knoxville Police Department said in a Facebook post.

Management at the unnamed business called the police on Thursday to report the suspicious packages. KPD Criminal Interdiction Officer Jimmy Wilson arrived, then requested help from K-9 Officer John Martin and his partner Beny.

K-9 Beny sniffed the packages and smelled drugs. The officers then searched the packages and found 144 kilograms, or 317.4 pounds, of powder cocaine, according to KPD.

"We always encourage others to report suspicious behavior or packages to authorities, and that’s exactly what the business did in this instance," the post reads.

"Officers do not believe that the business who alerted law enforcement are in any way related to the narcotics, therefore the name of the business respectfully remains anonymous."

Authorities have not announced an arrest in connection to the find.

KPD continues to investigate along with other law enforcement agencies, including the Tennessee Highway Patrol and the Drug Enforcement Administration.