greater manchester police
The girl was taken to hospital but died a short time later.
The baby was found injured on Wednesday at a property in Radcliffe.
A huge emergency service presence descended on the city centre on Friday evening.
MP was involved in a "small misunderstanding", a doorman said.
The transport interchange has been evacuated.
The 11-month-old was rescued from the River Irwell on Wednesday, but later died in hospital.
The boy, believed to be 11 months old, has been named by his mother as Zakari Bennett.
Police were called to reports that a child was in the River Irwell in Radcliffe, Greater Manchester.
Pearson’s mother Sandra Lever said: “Sadly last night, after a hard 20 months of fighting, our beautiful Michelle gained her wings and went to join her babies”.
He was arrested in Libya shortly after his brother, Salman Abedi, blew himself up at an Ariana Grande concert in May 2017.