The Bergen County Sheriff's Office Bomb Squad and K9 unit swept the evacuated stores after the 3:15 p.m. call, during which the "older-sounding" woman said, "There's a guy named Jonathan on the roof with a bomb," Saddle Brook Police Chief Robert Kugler told Daily Voice.
Officers also walked the roof without finding anything, he said.
As it turned out, two workers had been up there doing some type of repairs, witnesses said.
The Walmart was reopened at 4:45 p.m. and the other stores by 5:15 p.m.
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