Detectives are investigating an allegation of threats made to Bradford West MP George Galloway.
They came to light at the weekend, but police are not revealing their detail or whether anyone has been questioned about the claims.
Mr Galloway began his speech with the promised words "As I was saying Mr Speaker"
George Galloway is set to take his seat in the House of Commons this afternoon.
Parliament's newest MP unexpectedly swept to victory in last month's Bradford West by-election - securing a majority of over ten thousand in what he called a "massive rejection" of mainstream parties.
After touring the streets to the strains of Aretha Franklin's R.E.S.P.E.C.T, George Galloway switches to Bill Withers' "Lovely Day".
The town hall is the next to fall. I will stand for everyone, no matter their colour or how they pray. Respect to our Armed Forces but let's bring them home. This is a movement that has started here and I don't think it will be confined to here."
A protester has attempted to pelt George Galloway with eggs as he left for open top bus victory of Bradford.
The new MP for Bradford West was unhurt as the man threw around a dozen eggs, shouting "he's a parasite, a sycophant, we don't want him here".
Galloway seemed unfazed by the attack, climbing on to the bus, lighting a cigar and giving a victory sign. Onlookers applauded and car horns were sounded as the bus moved through the city centre.
The bus has been prepared, a throng of cameras and reporters await its departure to carry a triumphant George Galloway through the streets of Bradford. Details of his route remain sketchy, as does the time he is due to leave.
No stranger to attention, the new MP for Bradford West has been attracting plenty of it, with dozens of people arriving at the solicitor's office he is using as a base to catch a glimpse of him.
One onlooker said: "I think to call it a 'Bradford Spring' is a bit much, but this has shown people how their vote can make a difference. I don't think something like this will happen again but it's got everyone talking hasn't it? And they talk about voter apathy?"