Brutal knife attack in London heightens terror fears

The Associated Press

A tent is erected near the scene of an attack in Woolwich southeast London Wednesday, May, 22, 2013. A British official says a violent attack near a London barracks is being investigated as a...

A tent is erected near the scene of an attack in Woolwich southeast London Wednesday, May, 22, 2013. A British official says a violent attack near a London barracks is being investigated as a possible terrorist act. Police said two men attacked another man on Wednesday. One man is dead and two others were injured. (AP Photo/Alastair Grant)

The Associated Press

Police cordon off the scene of an attack which has left one man confirmed dead and two people wounded near Woolwich barracks in London Wednesday, May, 22, 2013. Scotland Yard said officers responded...

Police cordon off the scene of an attack which has left one man confirmed dead and two people wounded near Woolwich barracks in London Wednesday, May, 22, 2013. Scotland Yard said officers responded to reports of an assault Wednesday afternoon in the London neighbourhood of Woolwich. London Ambulance service said one man was found dead at the scene and two other men were taken to the hospital, with one in serious condition.(AP Photo/Alastair Grant)

The Associated Press

A tent is erected near the scene of an attack in Woolwich southeast London Wednesday, May, 22, 2013. British officials said one person has died and at least two people have been wounded in an...

A tent is erected near the scene of an attack in Woolwich southeast London Wednesday, May, 22, 2013. British officials said one person has died and at least two people have been wounded in an attack in southeast London. Scotland Yard said officers responded to reports of an assault Wednesday afternoon in the London neighbourhood of Woolwich. London Ambulance service said one man was found dead at the scene and two other men were taken to the hospital, with one in serious condition. (AP...

The Associated Press

Artillery Place road is closed in Woolwich southeast London near the scene where British officials said one person has died and at least two people have been wounded in an attack on Wednesday May...

Artillery Place road is closed in Woolwich southeast London near the scene where British officials said one person has died and at least two people have been wounded in an attack on Wednesday May 22, 2013. (AP Photo/Nick Ansell/PA)

The Associated Press

Police close the road on Artillery Place, Woolwich southeast London near the scene where British officials said one person has died and at least two people have been wounded in an attack on...

Police close the road on Artillery Place, Woolwich southeast London near the scene where British officials said one person has died and at least two people have been wounded in an attack on Wednesday May 22, 2013. (AP Photo/Nick Ansell/PA)

The Associated Press

A policeman speaks to a resident near the scene of an attack which has left one man confirmed dead and two people injured near Woolwich barracks in London Wednesday, May, 22, 2013. Scotland Yard said...

A policeman speaks to a resident near the scene of an attack which has left one man confirmed dead and two people injured near Woolwich barracks in London Wednesday, May, 22, 2013. Scotland Yard said officers responded to reports of an assault Wednesday afternoon in the London neighbourhood of Woolwich. London Ambulance service said one man was found dead at the scene and two other men were taken to the hospital, with one in serious condition. (AP Photo/Alastair Grant)