Canadian plane detects 'underwater noises' in search for missing submersible

A Canadian aircraft detected underwater noises overnight in the area of the missing submersible that was heading for the wreck of the Titanic.

A Royal Canadian Air Force (RCAF) plane involved in a search for a missing submersible headed for the Titanic has detected "underwater noises".

Just after midnight EDT on Wednesday, the U.S. Coast Guard said on Twitter, both underwater and air searches were "relocated in an attempt to explore the origin of the noises." 

It's not clear whether the sounds are linked to the missing submersible.

CNN reported Wednesday morning "banging" noises were heard every 30 minutes for a period of time on Tuesday, citing a U.S. government memo obtained by CNN and Rolling Stone.

The memo did not detail when or how long the sound lasted on Tuesday, CNN reported.

CTV News has not independently verified the details of the memo.

Search crews are looking for a submersible carrying five passengers that lost contact with its surface ship the Polar Prince early Sunday morning after leaving St. John's.