New York (CNN) -- A Delta flight to Madrid from New York returned to John F. Kennedy International Airport on Thursday after suspicious wires were found in the bathroom of the plane, officials said.
Delta Flight 126 took off about 8 p.m. and returned to the airport about 90 minutes later, according to a source familiar with aviation security at the airport.
The plane was taken to a remote area of the airport, passengers were evacuated, and the wiring was deemed not a threat, said David Castelveter, a spokesman for the Transportation Security Administration.
There were 206 passengers on the plane, a Delta official said.
Authorities were planning to continue the flight.
Investigators questioned a woman who complained of difficulty breathing at the time the wires were discovered but ruled out the possibility that she lodged the complaint to provide a diversion, said New York Police Department spokesman Paul Browne.
A man who was believed to have used the bathroom last before the wires were discovered was also questioned and denied knowledge of the wires, Browne said.
No arrests have been made in the incident, Browne said.
CNN's Jake Carpenter and Jesse Solomon contributed to this report.