Sudesh Amman told his mother, "I love you mummy" hours before he committed his attack in Streatham, south London.

       Haleema Khan received a text message early in the morning from her son which read "Allah loves you".

       She said: "I told him to go to the same shop we went to on Thursday and buy food. He said he would go there. Sudesh said he loved me.

       "He said 'Bye bye, I love you mummy'. That was the last time I spoke to Sudesh.

       "I saw that someone was shot dead in Streatham at two o'clock. I knew it was Sudesh."

       Ms Khan told the inquest in London that she went with Amman to a kebab shop in Streatham on January 30 but he grew suspicious that he was being followed while they were paying. "He told me that an officer is there.

       "He said he was followed by these officers. He told me somebody was following him on a motorbike."

       Amman, 20, was branded "one of the most dangerous individuals" that counter-terrorism police and MI5 had investigated.

       He had declared a desire to kill the Queen and become a suicide bomber while in Belmarsh prison in for terror offences. Police believed that it was a question of "when, not if" he would strike.

       Amman was shot dead by armed police within 62 seconds of launching his attack on February 2 in which both his victims survived.

       He was the oldest of six brothers and had been expelled from school for poor behaviour. He grew up in Coventry and Birmingham before moving to Harrow, north-west London.

       He was automatically released from Belmarsh in south-east London on January 23 2020, partway through a 40-month sentence for obtaining and disseminating terrorist materials.

       Amman, who is of Sri Lankan descent, spent 10 days living in a bail hostel in Streatham.

       During that time undercover police teams monitoring him remarked at his "concerning" behaviour. Amman was seen by covert police buying four bottles of Irn-Bru, kitchen foil and parcel tape from Poundland on January 31.

       The items were later used to make the "crude" fake suicide belt he was wearing.

       But police said there was not enough evidence to arrest him and feared searching his room would blow their cover.

       Amman was also involved in the radicalisation of other inmates in the maximum-security jail, including the Manchester Arena bomber's brother Hashem Abedi.

       The inquest continues.