Police have questioned a woman who brought over a £1 bag of Sergei Skripal's favourite cereal from Russia after being asked by his daughter Yulia.
Her father had asked her to bring her buckwheat back from Moscow while on her trip but Ms Skripal, 33, forgot it.
She instead asked an unnamed woman who was flying back separately to bring over the Russian-style breakfast, according to The Sun.
The woman, who works for a major medical company in Russia, has been 'interrogated' by Scotland yard over the presents.
Police are investigating the possibility that Sergei Skripal and his daughter Yulia (pictured) may have been poisoned by his favourite breakfast cereal brought back from Russia
Mr Skripal had asked his daughter to bring it back from Moscow when she returned the day before the nerve agent attack on March 4 but she forgot and asked a friend to buy it instead
A source told the Sun: 'Police had suspected gifts from Yulia to her father might have contained the Novichok nerve agent.'
Sergei, 66, had also asked for bay leaves and spices from Russia.
Yulia is said to be conscious and talking after the attack, but her father Sergei is still in a coma.