Results of postmortems on Arthur McElhill and Lorraine McGovern and five children who died in the Omagh fire tragedy may be known today.
The examinations of the children's bodies began yesterday in Belfast, the PSNI said. The bodies of Caroline (13), Sean (7), Bellina (4), Clodagh (18 months) and James (9 months) were taken to Belfast on Thursday night following a short service in the quiet residential area.
The two Omagh schools where three of the dead children were pupils reopened yesterday morning following Tuesday's fire.
Only a playground separates St Conor's primary school, where Sean and Bellina were pupils, from the scene of the tragedy at Lammy Crescent.
Parents from across the Brookmount area of the town collected their children after classes yesterday afternoon under guard from two PSNI officers who requested that no one, including staff at the school, be approached by members of the media.
Caroline's school, Sacred Heart College near the centre of Omagh, also opened for lessons as normal yesterday morning. Police headquarters also issued a repeat request from the McElhill and McGovern families to be left in private to grieve for the seven dead.
In a statement released by the police they said: "The McGovern and McElhill families would like to extend their thanks to everyone - friends, neighbours and indeed the entire Omagh community, for their support and sympathy at this terrible time. The family is also requesting that they are left alone by the media so they can grieve in private."
Screens remain in place to block views of the property, which is at the end of a row of terrace houses.
The area, declared a crime scene by the PSNI, was quiet as officers worked in the shell of the small house. The other three homes in the terrace appeared empty.
Children leaving St Conor's school continued to leave small bunches of flowers, many of them with handwritten notes of sympathy. Specialist counselling staff have been helping children at the school come to terms with the tragedy. Many youngsters cried as they approached a memorial for their schoolmates.
The PSNI has yet to comment on the fire, other than to confirm they have begun a murder investigation. Despite various media reports concerning Mr McElhill they have not said officially he is a suspect and continue to treat the tragedy as a case of seven murders.
They have also said an amount of petrol was in the property at the time of the blaze and that they are still following several lines of inquiry.
Media outlets have been advised to be "extremely careful" in reporting the case.
It emerged on Thursday that Mr McElhill had a criminal record and was convicted of indecent assault on a female in 1998.
The Belfast Telegraphlast night quoted a 31-year-old woman who claimed that she had been attacked by Mr McElhill in 1993 when she was still a minor.
"I knew I was in real danger. He was trying to suffocate me. The punches were getting really, really bad. He was so violent. I was so young," the newspaper reported.
The report added: "When I heard the news about the fire I felt sickened. I was scared of him all my life. I'm so sad for the lady and the children. I had always felt concerned for them because I knew what he was like and what he was capable of."