New Scotland Yard has given an update on the latest developments surrounding the spy poisoning investigation of an ex-Russian spy in Salisbury, southern England.
Neil Basu, senior national coordinator with the Metropolitan Police, made a statement. He said that given "such a sensitive and complex inquiry" he was limited as to the information he could provide.
There was no particular person of interest or suspect in the case, he said.
Retired military intelligence officer Sergei Skripal, 66, and his daughter Yulia, 33, were found slumped and unresponsive on a bench in Salisbury on 4 March. Tests later revealed they had been poisoned by a “military-grade nerve agent of a type developed by Russia," Prime Minister Theresa May said in a statement on Monday.
Yulia arrived in the UK, landing at Heathrow Airport on Saturday afternoon of March 3, Basu said. She and her father were then seen in Salisbury on Sunday afternoon - first at a Sainsbury's car park and then at a pub before going to the Zizzi restaurant which they left at 3.35pm.
The emergency services then received a call at 4.15pm and the pair were found.
They remain in critical but stable condition. A policeman, Detective Sergeant Nick Bailey, remains seriously ill after attending to them.
Neil Basu said 38 people had been seen in relation to the incident; 34 had been discharged from hospital. As well as the three still in hospital an outpatient was also being treated.
He ended his statement with an appeal for information from anyone who had been in Salisbury between one and four o'clock on Sunday, March 4.
The Home Secretary (interior minister) Amber Rudd said on Tuesday that the investigation was "going well".