An "extremely dangerous" man "obsessed" with firearms and explosives has been jailed for five years, the Crown Prosecution Service has said.

AJ Porter-Shaw, 29, had the means to cause "significant harm to a large number of people" after firearms, an explosive device and plans for making further weapons were discovered at his Lancashire home.

Unemployed Porter-Shaw, of Harrington Road in Morecambe, was handed the prison term at Preston Crown Court after pleading guilty to possessing a stun gun and making an explosive device at his home.

Neighbours had reported witnessing him using a stun gun at his address on June 11 2015 and contacted police.

When officers searched his home they found numerous firearms, some of which were home-made along with a stun gun disguised as a mobile phone, a samurai sword, a 'molotov cocktail' style bomb and various sketch designs for making further weapons and explosive devices.

The CPS said that its actions had "neutralised the risk that the defendant clearly posed to members of the public".

Senior Crown Prosecutor for CPS North West, Brett Gerrity, said: "AJ Porter-Shaw is a man with an unhealthy obsession with firearms and explosives, making him an extremely dangerous man.

"He was seen using the stun gun in full public view by a neighbour on a summer afternoon.

"The defendant clearly had the means to cause significant harm to a large number of people. We should all be extremely grateful to his neighbour who had the presence of mind and bravery to alert someone to his suspicious activities, which allowed a successful prosecution to follow."

A spokeswoman for Lancashire Police said there was no evidence to suggest that he had planned to use the devices for extremist purposes.