Blast bombs thrown

Six police officers have suffered minor injuries as a result of the violence - with the alert centred on Lake Street.

A number of houses were evacuated due to the alert, which has now been declared a hoax.

Police have advised people to avoid the area.

Train services have now returned to normal after being disrupted by the alert.

Police said a hard core of about ten people orchestrated a crowd of up to thirty during the trouble.

The injuries suffered by the officers are understood to include ringing in the ears after the blast bombs were thrown.

One of the bombs was thrown over the roof of a house which police described as "completely indiscriminate" as those who threw the bomb could not have known who was going to be in the area where it landed.