The submarine carrying drugs belonging to drug lord Escobar.

Escobar frequently used submarines to transport cocaine from Colombia to Puerto Rico, and then onward to the United States. If Escobar's submarine is indeed found, it could contain clues that could reveal where the drug lord hid his £50 billion fortune.

Divers working for the CIA are currently exploring a secret location off the coast of Colombia, The Sun reports. A team from Discovery Channel followed two former CIA agents in the hunt for Escobar's treasure.

In a video posted on Discovery Channel's YouTube channel in the UK, former CIA agents Doug Laux and Ben Smith dive into the sea but find nothing of value.

Underwater cameras showed them searching the seabed, finding pieces of metal and a box, but no clues leading to the money. Nevertheless, the team concluded that shifting sands on the seabed had likely moved the shipwreck, and they hoped to find it in the vicinity.

Pablo Escobar was the leader of the Medellin Cartel, supplying 80% of the cocaine consumed in the United States in the 1980s. In the 1970s, Escobar was so successful that he owned 15 airplanes and 6 helicopters used to smuggle drugs into the US. By the mid-1980s, his cartel was earning nearly $22 billion annually.

Most of Escobar's assets were in cash and stored in various locations. It was reported that he spent $2,500 a month on rubber bands to tie up his money.

In 1989, Escobar was listed by Forbes magazine as the 7th richest person in the world. He was also considered a hero by locals for donating money to the poor in Colombia and building houses for the homeless. In 1993, Escobar was shot dead.

To this day, most of Escobar's treasure remains undiscovered. In 2009, approximately $8 million of his possessions were found in a secluded compound deep in the jungle, a former cocaine processing plant.