The family of a man who died in police custody in Fife have called for a potential prosecution of Police Scotland on health and safety grounds to be considered.
They have also asked for a public inquiry to be launched into the wider issue of deaths in custody.
Sheku Bayoh, 31, died after being restrained by officers in Kirkcaldy on May 3, 2015.
His death is currently being investigated by Police Scotland’s independent watchdog, the Police Investigations Review Commissioner (Pirc).
The final report by Pirc is not expected to be submitted to the Lord Advocate for several months, according to Aamer Anwar, the lawyer of Mr Bayoh’s family.
Mr Anwar said the Lord Advocate should be given the power by the Scottish Government to instruct the Health and Safety Executive.
He added: “The family has also asked the Lord Advocate with the Scottish Government to consider widening the remit of the inquiry as a public inquiry under the Inquiries Act, so that it can deal with the wider concerns of deaths in custody that an FAI will not be able to do.”
Mr Anwar said the family do not believe Pirc can adequately investigate the incident, stating that they consider the organisation to be “part of the problem”.
He said the family are not “pre-judging the outcome” of the investigation and the prospect of criminal prosecutions.
He added that “we are talking about months” in terms of the completion of Pirc’s report and its submission to the Lord Advocate.
Mr Anwar said the Lord Advocate should be given the power by the Scottish Government to instruct the Health and Safety Executive.
He added: “The family has also asked the Lord Advocate with the Scottish Government to consider widening the remit of the inquiry as a public inquiry under the Inquiries Act, so that it can deal with the wider concerns of deaths in custody that an FAI will not be able to do.”
Mr Anwar said the family do not believe Pirc can adequately investigate the incident, stating that they consider the organisation to be “part of the problem”.
He said the family are not “pre-judging the outcome” of the investigation and the prospect of criminal prosecutions.
He added that “we are talking about months” in terms of the completion of Pirc’s report and its submission to the Lord Advocate.
A Crown Office spokesman said: “The Lord Advocate met with the family of Sheku Bayoh this morning to discuss developments in the investigation.
“This is a complex investigation which needs to be conducted thoroughly. We await the final report from the Police Investigations and Review Commissioner (Pirc) and therefore it would be inappropriate to comment further.
“It is the Crown’s intention to hold an early meeting with the family after the final Pirc report has been received and been considered.”
Relatives including Mr Bayoh’s partner Collette Bell have previously met with the Lord Advocate and Pirc head Kate Frame as they seek answers over the trainee gas engineer’s death.
In the course of its investigation, Pirc has consulted medical experts to ascertain the cause of death after a post-mortem examination proved inconclusive.
Mr Bayoh’s sisters Kadi Johnson, Adama Jalloh and Kosna Bayoh attended Monday’s meeting along with his mother Aminata Bayoh.
It comes a day after a memorial service was held near the spot where he died in Kirkcaldy.
Mrs Johnson told the BBC: “Sheku was a very happy boy. A very happy, outgoing boy.
“We want his legacy to linger on in a joyful way, because that is how he was.”