CanAm Steel and Sun Building Systems were the targets of a bomb threat Wednesday morning.
A threat was called into the businesses just before 11 a.m., according to police records.
According to Sunnyside Police Department Capt. Phil Schenck, the department responded to the threat, but he would not comment on the department's procedure.
"We take bomb threats seriously," said Schenck. "When we find those responsible for bomb threats we deal with them to the highest extent of the law."
He said that the department often catches those who phone in bomb threats.
"Today's age is not the time for people to make bomb threats," said Schenck. "This case will be open until we find the responsible person."