Michael Lynn and Dane McKeever are charged in connection with the incident in Milford on March 13, 2021.
Two Gardai were hospitalised and another treated for injuries after allegedly being assaulted after they were called to a house following reports of a party in breach of Covid-19 regulations.
Lynn (24), with an address at Bonds Hill, is charged with assault causing harm to Garda O’Riordan.
He is further charged with assaulting Garda Cole and he is also charged with assaulting the owner of the house, Mr Danny McGee.
Letterkenny District Court was told that Lynn is currently in custody in the North of Ireland.
Sergeant Jim Collins said that Gardaí are awaiting for direction from the Director of Public Prosecutions and also for medical reports in respect of injuries.
McKeever (22), of Fahan Street, faces three assault charges.
McKeever is charged with assaulting Garda O’Riordan, Garda Kelly and also with assaulting Mr McGee.
Judge Alan Mitchell remanded both men on continuing bail and adjourned the case to Monday, July 26.