In addition to the power cord, workers found a gas-powered generator, a winch and a wagon used to haul dirt and rocks, the Sun-Sentinel reported.
Workers called Pembroke Pines police, who used a remote control rover to follow the tunnel, which went under the road and stretched toward the drive-up window of the bank, WPLG reported. Police called the FBI into the case Wednesday morning, the television station reported.
Leverock said the tunnel was between 2 to 4 feet wide and at least 50 yards long, WPLG reported.
"I would like to say I saw something like this in the movies," Leverock told the television station. "However, this hole is so small. It is unique."
The bank remained open Wednesday, although the drive-up windows were closed.
Leverock said the tunnel did not breach the bank and no money was taken, WFOR reported.
"We did not find a body in the hole," Leverock told the television station. "We don't know who is behind this at this time. They could have been here a week ago, last night."
The end of the tunnel had not yet been found by Wednesday afternoon, Leverock told the Sun-Sentinel, adding the FBI was still trying to determine who was behind the burrowing.
“We don’t know who is behind this at this time,” Leverock told the newspaper.
A manager at Chase declined comment, the Sun-Sentinel reported.