This is the shocking moment two hired hitmen launched a hand grenade into a businessman's home during a sinister revenge attack.

Thugs Stephen Cronin, 31, and Bradley Harrington, 30, were captured on camera hurling the improvised explosive device through a bathroom window.

They can be seen sprinting away before a powerful blast blows out the windows of the family home in the leafy Moseley area of Birmingham.

Cronin and Harrington had travelled down from Liverpool to carry out the brutal attack after being hired by 40-year-old entrepreneur Danyal Gurjee.

(Image: Police )

Gurjee had accused the 43-year-old victim of costing him £400,000 in a failed business venture and demanded his money back in a series of threatening texts and phone calls.

He had ploughed cash into a property business venture in the Democratic Republic of Congo alongside his would-be partner, who also invested heavily.

After the deal collapsed towards the end of 2017, Gurjee, who lost his full stake in the proposed project, paid the hitmen £8,000 to exact revenge.

In the early hours of May 24 last year, the pair pulled up in an Audi A3 near the victim's home in Anderton Park Road and forced open security gates.

Cronin then smashed a downstairs toilet window while Harrington tossed an improvised grenade inside before they returned to their getaway car.

Seconds later it detonated causing damage running into tens of thousands of pounds, but luckily the property was empty and nobody was injured.

Detectives set about a painstaking CCTV trawl which traced the hatchback's movements for up to three miles as it headed south of the city.

Officers suspected they were heading towards the M42 ' and Automatic Number Plate Recognition (ANPR) cameras later picked them heading onto the motorway.

(Image: Police)

The car registration was shown to be active across Merseyside and was seen on camera heading south towards the West Midlands on the night of May 23.

Detectives also found footage of the men buying burgers at a motorway service station.

Just over a month later, on 26 June, a relative of the victim received a phone call from a man with a Merseyside accent.

The caller asked for a message to be passed on that they could "come to some sort of arrangement" but warning they were "not to be messed with".

And the next morning the victim's mother awoke to find a greetings card with a handwritten note urging her son to contact a mobile phone number.

Officers found the card ' featuring a sausage on the front and the words "You Silly Sausage" was stocked at a local supermarket and CCTV revealed two men buying the it at a self-service till.

(Image: Police)

Harrington and Cronin's fingerprints were found on the card and more CCTV analysis revealed they travelled from Liverpool to Birmingham and back on June 26 and 27.

The pair of hired thugs were arrested days later and charged with conspiracy to cause an explosion.

A mobile phone seized from Cronin showed regular contact with numbers associated with Danyal Gurjee and his brother Abdul Gurjee.

In one message Cronin, tells Abdul "he gave me 3k for a 10k job. I'm not letting this go the same be happen to his house that's a promise".

It prompted Danyal to retort: "You ain't getting more dough. You've had 8k. Done further more you could have had a lot more. Don't threaten me I don't take lightly to that".

The three men were jailed for a total of almost 70 years at Birmingham Crown Court on Friday.

Gurjee, of Preston, Lancashire, was jailed for 16 years and Harrington, of West Derby, Liverpool, was caged for 23 years after being found guilty of conspiracy to cause an explosion.

Cronin, of Dovecote, Liverpool, admitted conspiracy to cause an explosion, possession of two hand grenades, a sawn-off shotgun and a.22 rifle.

The additional weapons were found when cops stopped a van with cloned plates and he was was sentenced to 21 years and eight months behind bars.

(Image: Police)

Gurjee and his brother Abdul Gurjee, 36, also of Preston, who was jailed for eight years, were also convicted of blackmail.

Detective Inspector Tom Hadley, of West Midlands Police, said: "The investigation was detailed and complex carried out with exceptional skill and tenacity by our officers.

"It's a fact not lost on the prosecution barrister who, at court, praised the determination of the investigation team.

"The team went to great lengths to identify the offenders by painstakingly examining CCTV from around Birmingham, tracking their car to Merseyside and uncovering vital CCTV evidence from service stations and shops.

"It's not clear how the Gurjees came across Cronin and Harrington but it's suspected they were customers at a mobile phone shop where Abdul worked ' and he simply thought they were sinister types who could help his brother exert more pressure on the victim.

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"These are very dangerous hitmen who were prepared to use extreme levels of violence in order to threaten and intimidate.

"In my view they would happily have seriously injured someone of killed had the price been right ' and the public are much safer with them behind bars."