The Provisional IRA has been linked to the forcing out of a family at the centre of a dispute in west Belfast following the murder of Gerard Devlin.
However, the latest assessment by the IMC said the organisation had not sanctioned the use of violence in relation to the expulsion.
Mr Devlin (39), a father-of-six, was stabbed to death on February 3 in Ballymurphy. His killing sparked a wave of attacks.
The IMC said that after the murder the IRA "sought to defuse tensions and that despite popular pressure it declined to take violent action".
"We think nevertheless that PIRA did seek to secure the departure from the area of one of the families involved in the dispute but did not sanction the use of violence," it said.
"We also believe that in a separate incident PIRA itself may have been associated with the forced departure of somebody from the area where he lived."
As billed days before publication the assessment of the IRA covering three months, from December to February, was highly positive.
The commission concluded that while some senior IRA men were still involved in organised crime, the leadership had sanctioned no paramilitary or other violent activity.
In the last three months there has been no indication of training, engineering activity, recruitment or targeting, nor has the organisation carried out any so-called 'punishment' shootings or beatings.
The IMC said it had information on instances of IRA members being involved in assaults and other violence, largely arising from personal or community disputes, but there was "nothing to suggest" that these individuals were acting under the orders of the organisation.
"There has now been a substantial erosion of PIRA's capacity to return to a military campaign without a significant period of build-up, which in any event we do not believe they have any intentions of doing," the IMC said.
The commission has previously blamed the IRA for continuing to gather intelligence but this is no longer the case.
"Though PIRA has access to people in positions in public and private organisations who could provide them with sensitive information on individuals which might be of use to them, we have no indication that people are currently being tasked to supply such information," it said.
The IMC said there were signs that the IRA continued to stop members engaging in criminal activity.
It noted that members had been told not to attend February's Love Ulster march in Dublin which erupted in violence.
Republicans previously engaged in illegal fundraising had been ordered to desist, the commission said.
However, the IMC said it believed some Provisionals, including "senior ones", were still involved in crime such as fuel laundering, money laundering, extortion and smuggling.
The three-member commission said it still held the "absolutely clear view that the Provisional IRA (PIRA) leadership has committed itself to following a peaceful path".
The IMC also praised Sinn Féin, saying it had seen "further evidence" of positive leadership.
The report referred to the retention of some IRA weapons following last autumn's decommissioning.
It said the IRA had claimed only to have destroyed all the arms "under its control" and that any kept by local units had been retained without the order of the leadership.
The commission said the unsurrendered weaponry was "not significant" compared to what had been decommissioned.
The IMC mentioned the murder of former Sinn Féin official and self-confessed British agent Denis Donaldson in Co Donegal earlier this month. The killing was not covered in this report but will be in the next.
On the dissident front, both the Continuity IRA and Real IRA remain a threat.
CIRA is the most active of the dissident groups. It continues to recruit and was behind a number of attacks during the period covered.
The IMC said it did not believe CIRA had been involved in rioting at the Love Ulster March.
The commission's assessment of the RIRA remains the same – that it has been responsible for violence including shootings and remains involved in other serious crime including a kidnapping and robbery in Derry which netted £30,000.
The IMC said that despite infighting within the RIRA's two factions, the organisation's "aspirations and readiness to use extreme violence are undiminished".
The status of the INLA remains largely unchanged. It continues to be linked to organised crime including drugs.
The IMC said it believed the group had carried out assaults.
The commission also said the INLA was linked with ordering a suspected burglar to leave Strabane, Co Tyrone, and was involved in robberies including one in Sion Mills and another at the Ulster Bank in north Belfast in February during which a woman and a one-year-old child were held hostage.
