Five mourners have been shot and killed by a group of gunmen while paying their respects to one of Mexico's most notorious drug lords.

Shocking footage shows two SUVs driving up to the grave of Arturo Beltran-Leyva, the late leader of the Beltran-Leyva Cartel, at the famed Humaya Gardens in Culiacan.

The gunmen then step out of their vehicles, open fire, and kill the men in front of them.

It is not known when the shooting took place, and police have not revealed any details about the victims.

WARNING GRAPHIC IMAGES

Five mourners have been shot and killed by a group of gunmen while paying their respects to one of Mexico's most notorious drug lords. Shocking footage shows two SUVs driving up to the grave of Arturo Beltran-Leyva, the late leader of the Beltran-Leyva Cartel, and opening fire

A number of lavish tombs house drug lords and their family members at the Humaya Gardens in the Mexican state of Sinaloa

As the two trucks pulled to a sudden stop, a group of people could be seen running for cover.

Those that milled around by the idle truck in front of the pantheon listening to music tried to escape but quickly fell to the ground as the shooters emptied out their rounds.

The remains of Arturo Beltran-Leyva rest at the mausoleum which was recently visited by a group before they were shot at by an unidentified group

The Humaya Gardens house a bevy of the deceased cartel leaders and their families inside lavish mausoleums big enough to pass off as homes.

Beltran-Leyva died at the age of 48 on December 16, 2009 during a shootout with the Mexican Navy's wing of Elite Forces, thus commencing the downfall of one of the strongest cartels to have ever existed

Since the 1990s, the Beltran Leyva Organization, as it was also known, together with the Sinaloa Cartel, directed a drug transportation network that shipped tons of cocaine and methamphetamines into the United States.

The Beltran Leyva Organization [BLO] dominated drug trafficking in western Mexico and ordered plenty of murders during its height in power and under the direction of Beltran-Leyva were able to penetrate and influence Mexico's political, police and justice system and amazingly found a way to use Mexico's Interpol agency to its advantage.

But the BLO splintered its business dealings with El Chapo's Sinaloa Cartel in 2008, waging one of the Mexico's deadliest periods in history just six years after El Chapo had managed to create the Federation, a collective of 25 of the country's drug trafficking groups.

Hector Beltran-Leyva, the older brother of Arturo Beltran-Leyva, was arrested by Mexican authorities in October 2014

Carlos Beltran-Leyva was one of the four brothers that headed the mighty Beltran-Leyva Cartel that was able to infiltrate various Mexican governmental offices, including its Interpol affiliate. The tomb where his brother Arturo Beltran-Leyva rests was the scene of a recent execution

Alfredo Beltran-Leyva was arrested by Mexican authorities almost two years before his brother Arturo Beltran-Leyva was killed in a gun battle with the Mexican Navy. Alfredo was extradited to the United States in November 2014 and sentenced to life in prison in April 2017

The gunmen then step out of their vehicles, open fire, and kill the men in front of them. It is not known when the shooting took place, and police have not revealed any details about the victims

The group suffered a tough blow when Carlos Beltran-Levya, who is in his late 40s, was arrested two weeks just two weeks after his brother's death.

The cartel is believed by Mexican authorities to have completely lost any influence and power with the October 2014 capture of Hector Beltran-Leyva, 53, just a month before his younger brother Alfredo Beltran-Leyva, 47, had been extradited to the United States after his 2008 arrest for drug trafficking charges.

Alfredo Beltran-Leyva was given a life jail sentence in April 2017 and forced to pay $529 million to the U.S. government.