Authorities have not found any credible threats on board the two Air France flights diverted overnight Tuesday. The planes were forced to land after receiving anonymous threats.
Authorities gave the all-clear on Wednesday after searching the two landed planes for threats, the FBI said in a statement.
The two Air France flights were both diverted safely around the same time on Tuesday night after receiving anonymous theats after take-off.
"As a precautionary measure and to conduct all necessary security checks, Air France...decided to request the landings of both aircraft," the company said in a statement.
US investigators found no explosives or other threats on board, however.
On Tuesday night, a Boeing 777 travelling from Washington, D.C. was diverted to Halifax, Canada, and around the same time an Airbus A-380 en route from Los Angeles to Paris was diverted to Salt Lake City, Utah.
All passengers disembarked safely upon landing and were taken to nearby terminals.
blc/msh (AFP, AP)