Some family members of the five young Irish students and one young Irish-American killed when a balcony collapsed in Berkeley in California have arrived in the city.
The six died when a balcony at an apartment block collapsed during a 21st birthday party in the early hours of yesterday morning.
Ms Donohoe had dual Irish-US nationality and was a cousin of Ms Burke.
Two other students, including the girl whose birthday it was, are said to be in a critical condition in hospital.
Five others are described as stable, but some have life-changing injuries.
The injured are being treated at Highland Hospital in Oakland, Eden Medical Center in Castro Valley, and John Muir Medical Center in Walnut Creek.
Police received noise complaints about the apartment less than an hour before the balcony collapsed.
They did not respond immediately because of a reported shooting elsewhere in the city.
Structural integrity of balcony part of investigation
Authorities said they were investigating a number of factors, including the structural integrity of the balcony.
Thirteen people were reported to be on the small balcony when it gave way, plunging 12 metres to the street below, officials said.
The balcony was slightly wider than the double-doors leading out to it and no more than 1.5 metres deep.
It had been rated to safely carry a maximum weight of 293kg per square metre, a city spokesman said.
The spokesman said there was no requirement for the building owners to post a limit for the number of people it could hold.
Police said no one on the ground was hurt and no one was on the third-floor balcony at the time of the incident.
Following the collapse, authorities declared all similar balconies in the complex off-limits as a precaution.
The collapsed balcony was removed yesterday, while structural engineers inspected the balcony beneath it, and based on the condition of the wooden supports there made the decision to make arrangements to remove that too.
Questions have arisen about the use of wooden beams to secure the balcony and the preliminary results of an investigation into what happened is due within days.
City spokesman Matthai Chakko said construction of the building was completed in 2007, with a final inspection conducted in January of that year.
A wreath laid on behalf of the Irish Govt,&another from the Irish-American community at the #Berkeley scene. @rtenews pic.twitter.com/8axiZQBSNf
— Caitriona Perry (@CaitrionaPerry) June 17, 2015The Mayor of Berkeley and the Consul General of Ireland to San Francisco laid two wreaths at the scene late yesterday - one on behalf of the Irish Government, the other on behalf of the local Irish-American community.
The Department of Foreign Affairs helpline can be contacted on +353-1-4180200.
Additional Reporting: Washington Correspondent Caitríona Perry
We still know very little officially as to what happened, there are investigations under way.
When I was at the scene there earlier on, some engineers and surveyors came by, not employees of the council, but people who wanted to see what happened.
From their expert eyes, they said they could see water damage to the wood and what looked like some sort of mould on the outside of the wood.
One point of investigation is that there was a water leak in underneath the bottom of the balcony, which was fixed by wooden beams.
There were 40 or 50 people in the apartment and about 13 on the balcony at the time it collapsed.
There is such a sense of shock and confusion among J1 students in Berkeley.
Mayor of Berkeley describes 'shock' of incident
Mayor of Berkeley Tom Bates has described what happened as a "terrible tragedy" and a "real shock"
Speaking on RTÉ's Morning Ireland, he said the city's Health Department would be offering assistance to people affected.
Counselling would be available and other supports, such as finding people places to stay, he said.
Asked about the response of the emergency services, Mayor Bates said, as he understood it, a call of complaint of violations of the city's noise ordnance came into the police department and almost simultaneously another call came in, which was a shooting incident in another part of town.
Police responded to the shooting, he said.
About 40 minutes later a call came in, in relation to the balcony collapse.
Mayor Bates said city inspectors would thoroughly investigate the cause of what happened, saying it was really speculation at this point.
"Some preliminary issues that have raised - that possibly some water might have gotten lodged in with the wood - and the wood would have deteriorated over time - but we don't know that.
"That's speculation on our part," he said.
However, he said they will know more shortly as inspectors had been on the case since the incident was reported.
