CCTV footage of the white van's movements.
GARDAÍ have issued a fresh appeal for information in relation to an aggravated burglary and serious assault at a house in Lifford, one year ago.
A spokesperson said: "At approximately 7.35pm on the evening of Monday, November 18, 2019, six males entered the home of a man, armed with a number of weapons and a firearm, and proceeded to assault him.
"The man received a number of injuries as a result of the incident.
"Gardaí are appealing to any person who may have information in relation to this incident to come forward.
"Gardaí are particularly interested in the movements of the small white van, which was observed entering and exiting the Coneyburrow Estate in Lifford between 7.30pm and 7.40pm.
"Gardaí want to speak to the owner/ driver of this van to eliminate it from their enquiries."
The make and model of the van is not clear from CCTV footage, however Gardaí believe it is, or is similar to, a Citroen Berlingo or Peugeot Partner.
The vehicle travelled to Coneyburrow from the Clady/Cloughfin direction and entered the estate at 7.33pm.
The van is later observed exiting the estate at 7.38pm towards Castlefin.
The spokesperson continued: "Anyone who recognises this van or is aware of its movements on the night of November 18, 2019 is asked to come forward.
"Anyone who was in the vicinity of the Coneyburrow Estate on the evening of November 18, 2019 between the hours of 7.15pm to 8pm is also asked to contact Gardaí."
In January 2020 investigating Gardaí arrested and detained one male under Section 30 of the Offences Against the State Act, 1939.
Investigating Gardaí say they continue to work closely with colleagues in the PSNI in relation to the ongoing investigation.
"Anyone with any information should contact the Incident Room at Letterkenny Garda Station on 074 916 7100 or the Garda Confidential Line on 1800 666 111," the Garda spokesperson added.