More video footage has emerged this afternoon of a controlled explosion carried on a van in the Circular Road area of the Creggan estate in Derry.

WATCH:Controlled-explosion1

The security alert began around 11.30am this morning (January 21) after it was reported that a white Transit had been hijacked by three masked men. An object was then thrown into to vehicle before the hijackers abandoned it.

A second security alert at Southway involving a hijacked Post Office vehicle is ongoing. The PSNI say that two delivery men were hijacked by four masked men. One of the assailants is understood to have been armed.

Today's alerts follow a car bomb attack on Saturday night at Bishop Street courthouse. Police are blaming republican group the New IRA for the attack.

If you have a story or want to send a photo or video to us please contact the Derry Now editorial team on 028 7129 6600 for Derry City stories Or 028 7774 3970 for County Derry stories. Or you can email [email protected] or [email protected] at any time.