DONALD Trump’s bodyguard wore a pair of plastic arms while holding a machine gun under his coat during the Presidential inauguration, it has been claimed.

After President Trump took the official oath he and his family walked four kilometres down Pennsylvania Avenue to the White House flanked by heavy security.

But it was the secret service agent walking beside Trump and First Lady Melania that caught the eye of social media users.

The stern-looking man’s arms seemed stiff and appeared not to move for the entirety of the walk.

This has led to speculation that he was concealing a weapon under his jacket and was most likely holding it with his trigger finger ready.

And because both his “real” hands were hidden, some online users are convinced the security officer was holding an automatic weapon.

One YouTube commentor said: “That is a prosthetic arm, tucked in his coat, that agent is carrying a long gun under his coat, and he is right handed.

“He is holding his long gun, up close and under his right arm pit, prob a rifle SBR or sub machine gun.”

But some eagle-eyed online dwellers have claimed to have spotted the bodyguard’s fingers twitching and there is no previous evidence of agents using prosthetic limbs.

Yet, one conspiracy blogger claims to have showed the images to military boffins, reports the Daily Star.

The user insists that the experts believe the weapon under the jacket is a FN-P90 machine gun.

He said: “Their conclusion is they believe he had fake arms so he could conceal a fully automatic rifle in the ready position under his coat.

“Numerous members of the military community speculated it was likely a FN-P90 rifle.”

This story originally appeared on The Sun and was reproduced with permission.