Fresh tributes are still being left at the scene of an accident in Liverpool city centre which claimed the lives of a father and son.
David Bottomley, 53, died at the scene after an industrial accident at the Unity Building on Chapel Street.
David's son Clayton, 17, died in hospital four days later.
On Friday a spokesperson for the Health and Safety Executive (HSE) confirmed their investigation into the accident which happened on May 19 was "active."
Fresh tributes to the father and son were left at the site over the weekend. Teddy bears, beer bottles and messages from local businesses have all been left at the site so far.
This is what we know so far about what happened.
The emergency services were called out to the Unity Building on Chapel Street at around 3.30pm on May 19 following reports that the two men had been found seriously injured after falling.
David Bottomley, a life-long Leeds United fan, died at the scene. Clayton, was rushed to hospital in a critical condition. He lost his fight for life on May 23.
"Peas in a Pod"
David and Clayton, from Knottingley in West Yorkshire, had been described as "inseparable" and like "peas in a pod" by a close friend.
The friend told the ECHO that David was a highly experienced insulation expert who had been working on the Unity site for around two years.
Clayton decided to work for his dad full-time after he picked up injuries playing rugby, the friend said.
The friend said the Bottomley family, well known in the Castleford area, were generous, kind and very hard working.
What happened?
A family friend, who asked not be named, told the ECHO the two men were working on an elevated platform known as a mast climber at the time of the accident.
The friend said the men were working at the top of the building, when the mast climber suddenly "collapsed." He said the platform fell from one section of the site to a lower section.
He said that he expected the HSE investigation to now concentrate on the mast climber.
Family's reaction
The friend said the Bottomley family had been touched and moved by the messages of support and kindness from the people of Liverpool.
He said: "There have been so many kind messages and words that have really helped the family. They have been so very touched by the people of Liverpool. I can't really stress that enough."
A fundraising appeal had now been launched to help the family with funeral costs.
The friend said: "There are so many complications right now due to the nature of their deaths. The family need to help to pay for the funeral."
Who was in charge on the site?
Lead contactors Laing O’Rourke have said they will be cooperating fully with the HSE led investigation.
The company released a statement after the accident which read: ""Our Health and Safety team is at the site and we and our sub-contractors will cooperate fully with the investigation into what happened. Our thoughts are with the family and friends of the men at this extremely difficult time.”
The investigation
The accident is now subject to a joint investigation by the HSE and Merseyside Police.
After the accident the HSE released a statement which read: "“HSE are aware and are investigating with the police.”
Merseyside Police released a statement after Clayton Bottomley's death. It read : "Following an incident at a building site on Chapel Street on Wednesday 19 May, we can confirm that an 17-year-old male sadly died in hospital on Sunday 23 May.
"The man’s next of kin have been informed and are being supported by specially trained officers at this time.
"A second man, aged 53, sadly died at the scene of the accident.
"Emergency services were called to a site around 3.30pm to reports that the two men had been found seriously injured after falling.
"An investigation is being carried out by detectives and the Health and Safety Executive."
To contribute to the fundraising appeal go here.
