WIRE:09/04/1999 01:29:00 ET
Karachi quiet amid tight security as strike begins

KARACHI, Sept 4 (Reuters) - Hundreds of paramilitary Rangers  and police guarded roads in Karachi to avert violence on  Saturday at the start of a strike called by the opposition  parties and traders, witnesses said.  

They said Rangers were patrolling the mostly deserted main  roads in armoured vehicles and police armed with assault rifles  were seen guarding street corners.  

Police said 10 vehicles were set afire overnight as tension  increased ahead of the strike.  

Traders are protesting a proposed general sales tax, and the  opposition called the strike to protest the government's  handling of affairs in Sindh province where direct rule was  imposed to crack down on violence that killed over 800 people  last year.  

The nation-wide strike call by traders comes several days  after an estimated 40,000 opposition party and hardline Islamic  group supporters joined forces in a demonstration in central  Lahore, calling on Prime Minister Nawaz Sharif to step down.  

Opposition parties have rallied behind protests by Islamic  groups to add weight to a "Sharif Out" campaign they have  waged since he ordered guerrillas to leave strategic heights in  the disputed Kashmir region in July under world pressure to head  off a fourth Indo-Pakistani war.  

Sharif has played down the protests, saying they cannot  reverse the huge majority he won in February 1997 elections.  

Opposition leader Benazir Bhutto issued a statement accusing  the government of rounding up thousands of her Pakistan Peoples  Party supporters in the run-up to the strike.  

"The Nawaz regime is once again resorting to brute force to  suppress democracy," Bhutto said.  

The strike comes one day after hundreds of police delayed an  anti-government rally in Karachi by the Muttahida Qaumi  Movement.  

Saturday's strike was called by traders to protest against  the imposition of a 15 percent general sales tax, a demand from  the International Monetary Fund as part of its loan programme  for Pakistan.