KARACHI, Aug 14: Police went into a state of high alert on Tuesday after three power pylons of the Water and Power Development Authority were blown up in different parts of Gadap Town.

The blasts briefly disrupted supply of power from Hub to Jamshoro.

Assistant Engineer (transmission) Nazeer Ahmed told Dawn that the 500KV line tower no.111 was blown up at around 8.54pm on Monday.

Police sources said that two more bombs had been placed at the foot of another tower, about four kilometres away. These bombs did not go off.

The Manghopir police SHO said an act of sabotage took place in Deh Bund Murad, some three kilometres from the Northern Bypass. “Two bombs were found under tower no.113 at about 9.30am.”

Police officials and bomb disposal personnel went to the place after Wapda officials reported the matter, said the SHO.

“Patrolling has been intensified to protect power pylons in the area and police teams are conducting snap checking,” he added.

The bomb disposal squad defused the two unexploded devices weighing 3kg each and fitted with timers.

Wapda sources said that saboteurs had tried to ignite the bomb but the cord did not catch fire.

They said it would take some 20 to 25 days to instal new pylons. Gadap Town Nazim Ghulam Murtaza Baloch told Dawn that towers no. 190 and 191 had been blown up.