THE LATEST search for the Loch Ness monster has led to an “unexplainable noise” and a potential sighting.

Hundreds of budding monster hunters were involved in scouring the 23-mile-long loch for unusual activity, both in person and online.

Evelyn Murphy, age 11, captured a potential sighting (above) with what has been described as an “intriguing photo”, showing a clear break in the water made by an unidentified object or creature.

READ MORE: Loch Ness monster pictures 'most compelling evidence yet'

Meanwhile, using a hydrophone to listen for mysterious sounds echoing from the depths of the loch, Alan McKenna from Loch Ness Exploration captured a unique noise to be analysed, a rhythmic pulsing that lasted about 10 seconds.

McKenna will now isolate the noise in attempt to identify the source of the fascinating sound that he has never heard before.

The event took place on the 90th anniversary of the adventurer Sir Edward Mountain and his team of 20 undertaking the first ever surface area search for Nessi.

Over the 4 days between Thursday and Sunday last week, a number of other celebratory events took place.

The National:

The centre hosted a live debate with Alan McKenna from Loch Ness Exploration, Loch Ness writer Roland Watson and eyewitness Richard White, which was held in-person and screened virtually to participants from around the world.

Ashley Range, a volunteer who travelled from Washington state in the US to take part in the event, said: “I’ve been obsessed with Scotland and Nessie my whole life, and to be here is just a dream. To be on an actual expedition and out on Deepscan exploring Loch Ness is a dream come true. I definitely believe in Nessie.

“Although a lot of the evidence can be explained, there is a lot out there that is unexplainable. It’s been an incredible trip!”

Paul Nixon, general manager of The Loch Ness Centre, said: “The excitement this weekend has proven that intrigue surrounding Loch Ness and its monster is still very much alive. We all want the same thing, to discover the mysteries of the natural phenomena beneath the loch.

“We’ve been delighted to welcome so many people to The Loch Ness Centre for hour-long centre tours and Deepscan boat trips across the weekend. After another successful The Quest Weekend, we’re more determined than ever to continue our search for answers.”