An investigation has been launched in Drogheda after five separate incidents, including two petrol bomb attacks, took place in a six-hour period between Thursday night and Friday morning.

Gardaí say they are also aware of a sixth incident, in which an 18-year-old was assaulted with a weapon believed to be a hatchet.

Three of the six incidents took place in the Cement Road area of the town. The five incidents during the night occurred between 11.15pm on Thursday and approximately 5.20am on Friday.

Gardaí confirmed that the first incident involved what appeared to be a petrol bomb, which was thrown at a house in the Termon Abbey area.

There were no injuries in this incident and minor damage was caused to the property.

Less than 15 minutes later, at 11.29pm, gardaí received reports that a man had entered a halting site in the Cement Road area allegedly carrying a firearm.

Gardaí went to the location, but nothing was found and no one was injured.

Two and a half hours later, at approximately 2am, gardaí received reports of another apparent petrol bomb incident on a roadway in a residential area of Cement Road. Damage was caused to the roadway but no injuries were sustained.

A short time later, gardaí received reports of a car on fire in the St Laurence's Park area of Drogheda. Another car fire was reported in the St Laurence's Drive area at approximately 5.20am.

Both vehicles have been taken for a technical examination.

Gardaí are also aware of an apparent assault on an 18-year-old male with a hatchet in the Cement Road area of the town at around 5pm on Friday.

It is understood that he was struck on the head and required stitches.

A garda spokesperson said no arrests have been made in relation to any of the incidents and investigations are ongoing.