Another man detained has since been released
A man is due to appear in court in connection with a serious assault in Roscommon last month.
The man aged in his 40s was detained on Wednesday, and is expected to appear before a special sitting of Roscommon District Court this evening.
Another man arrested on Tuesday as part of the same investigation was released without charge.
A file will be prepared for the Director of Public Prosecutions (DPP).
A 20-year-old man suffered a serious assault in Roscommon town on August 30th.
He is continuing to recover from his injuries.
Investigating gardaí are continuing to appeal for information.