Post-mortem tests are being held on the bodies of two UK children found dead in a hotel in north-east Spain.
A minute´s silence has been held in Lloret de Mar where Rebecca Smith, five, and her brother Daniel, 11 months, were found.
It later emerged their father Martin Smith, 45, was in custody in the UK facing unrelated child sex offences.
Cumbria Council has said their mother Lianne worked in its children ´s department, but not with children.
Mrs Smith, 43, is being questioned by Spanish police in the nearby town of Blanes following the discovery of the children´s bodies.
Police have 72 hours from the time of arrest before they must present their case to a magistrate who will decide whether to bring any charges.
About 100 holidaymakers and locals gathered outside the resort´s town hall on Thursday morning.
Deputy mayor Ignasi Riera i Garriga said they wanted to express their condolences for the “tragic deaths” which he said had had a “big impact” on the town.
Martin Smith faces 13 sex offence charges against a girl under 18
Cumbria County Council confirmed Ms Smith was responsible for out-of-school activities throughout the county.
Rebecca was referred by police to its social care team following inquiries into Mr Smith, 45, who was remanded at Carlisle Magistrates´s; Court on Wednesday until 7 June.
Child protection procedures were put in place before the allegations were passed to social services in Staffordshire, where Ms Smith and her daughter moved in October 2007.
They were reported missing two months later.
Cumbria Police has now voluntarily referred itself, and Staffordshire Police, to the Independent Police Complaints Commission (IPCC) about the family´s case.
The IPCC said it was assessing the details and would decide whether it needed to conduct an investigation.
Mr Smith, the father of both children, was extradited from Spain over 13 charges of sexual offences against a girl aged between seven and 18 and for failing to answer police bail.
He was told on Tuesday his children had been found dead at the Hotel Miramar in the Costa Brava resort.
He had been arrested in Barcelona on 7 May.
Lloret de Mar fell silent on Thursday to remember the dead youngsters
He was charged with six counts of gross indecency with or towards a girl aged under 16 between 1995 and 2001; six counts of rape of a girl aged under 16 between 2001 and 2005 and one count of attempted rape of a girl under the age of 16 between 1997 and 2001.
Wearing a blue top, he confirmed his name and date of birth but gave no plea. He will appear at Carlisle Crown Court next month.
Spanish police found the children´s bodies shortly before 1400 local time on Tuesday in a room at the four-star hotel.
The discovery came after Mrs Smith asked the hotel reception desk for help.
According to our correspondent, the hotel´s receptionist said Mrs Smith told her she needed to speak to the police and had appeared calm before returning to her room.
Police said there were no outward signs of violence but officers have not confirmed reports in Spanish newspapers that the children were suffocated.
Reports that Mrs Smith had given a confession had also not been confirmed by police, a BBC correspondent added.
The hotel receptionist told the BBC the family had been at the resort since Saturday and daughter Rebecca would often wave to the staff.
Estonian tourist Siiri Sonajalg, 47, who was also staying at the hotel, said she was shocked.
“The hotel and police didn´t tell us anything. I didn't sleep very well last night because I was just wondering what the mother was feeling when she woke up that morning.
“I feel very sad. I keep thinking about what happened.”
The year the family went missing, Mr Smith had appeared on the television programme Most Haunted as a guest psychic investigating alleged paranormal occurrences at Brougham Hall near Penrith.
via BBC News – Post-mortem tests on UK children found dead in Spain.
