A serial thug who brandished what appeared to be a gun at a terrified police officer has been sentenced to 40 months.

David Docherty pointed the weapon at PC Tom Marshall from the passenger seat of a Citreon in Glasgow's Finnieston on April 24, 2021, before the motor sped off.

The 35-year-old committed the crime having months earlier blasted the living room window of a house in the city's Cardonald with a shotgun.

Docherty had denied the offences during a trial at the High Court in Glasgow.

But, jurors today convicted him of a total of four charges.

He was found guilty of having a firearm or imitation gun with intent to cause PC Marshall to believe violence would be used against him.

Docherty was guilty of culpably and recklessly discharging the 12-bore shotgun as well as possessing the weapon in connection with the Cardonald incident.

He was finally convicted of attempting to pervert the course of justice.

Docherty is already serving a four-year sentence imposed last October for torching the cars of prison officers at HMP Kilmarnock.

Judge Alasdair Macfadyen today told him: "This case represented appalling behaviour in and around Glasgow.

"This involved an actual shotgun, an apparent weapon of some sort and an attempt to destroy evidence to interfere with the course of inquiries into serious crime."

The sentence will begin at the end of the four-year jail term.

The trial heard how police had pulled in the Citreon in Glasgow's Lancefield Quay due to a potential insurance issue.

In his speech to jurors, prosecutor Alex Prentice KC said PC Marshall got out and went to the vehicle.

Mr Prentice described how the passenger in the car "leaned over" and pointed the weapon at the constable, who immediately "dropped to his knees".

The Citreon then raced off at "excessive speeds" even in the face of oncoming traffic.

Jurors heard how PC Marshall was left in an "upset state" by what happened.

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The vehicle - which was found to have false number plates - was later discovered to have been torched in Milngavie, East Dunbartonshire.

Mr Prentice put to jurors: "Why would anyone set fire to a car? To remove any possible link to criminality."

Docherty was linked to the car due to fingerprints and having been earlier captured on petrol station CCTV filling up such a vehicle.

The shooting at the house in Cardonald occurred on July 28, 2020.

Luckily, no one was in the house at the time.

Jurors were told a red Ford Fiesta had been involved.

Docherty was found days later at a house in Darnley, East Renfrewshire.

There was a Ford Fiesta outside and he had a key which unlocked it.

The gunman in the attack was also said to have had a supermarket carrier bag - such an item was also found in this motor.

After the verdict, Mr Prentice revealed Docherty had 22 previous convictions for violence, drugs, robbery and reckless conduct.