A man being questioned over the murder of Ashling Murphy could be charged later today.
It comes after the man, aged in his 30s, was arrested on suspicion of murder.
He was arrested in a Dublin hospital on Tuesday, after being treated for self-inflicted stab wounds and other injuries.
He is being questioned at Tullamore Garda station under Section 4 of the Criminal Justice Act.
He can be held for up to 24 hours without charge.
Irish Examiner reporter Liz Dunphy told Newstalk Breakfast charges could be brought as soon as today.
"No charges were brought against him last night anyway, but it is expected that charges may well be brought today.
"This man is understood to have been arrested as he was discharged from hospital yesterday.
"It's believed that that was actually at about the same time as Ms Murphy's funeral was taking place in Mountbolus outside Tullamore."
She says this is the man Gardaí have been waiting to speak to.
"It's understood that this man was the same person of interest, basically, that Gardaí were looking to speak to for some days now.
"They were essentially waiting until he was medically fit to be interviewed or discharged.
"It's understood that Gardaí have retrieved significant amounts of forensic and DNA evidence throughout the investigation.
"So that should prove very useful when it comes to presenting a case to the DPP in order for charges to be brought forward.
"Today is very likely to be the day, but we'll just have to wait and see".
The 23-year-old schoolteacher was laid to rest in her native Co Offaly on Tuesday morning.
Her 1st class pupils from Durrow National School formed a guard of honour outside the church, and each held a red rose and a photo of their teacher as the cortege arrived.
While during the funeral mass, Ashling's cousin Ciara Leonard paid tribute to her through a Prayer of the Faithful.
"Ashling epitomised the beauty of life, and shared her passion, gifts and talents with others so generously.
"We pray for her friends, colleagues and students - may Ashling's legacy live in the hearts of all she touched", she said.