Chris Broad was today accused by the chairman of the Pakistan Cricket Board of lying about security in Lahore during Tuesday's deadly terrorist attack.

Broad, the former England batsman turned International Cricket Council referee, claims he and the match umpires were left like "sitting ducks" as bullets tore into their minibus, killing the driver and seriously wounding an official.

He has also admitted to considering conspiracy theories that Sri Lanka's cricketers and the match officials had been the victims of a set-up because of a change in the security operation.

But chief of the Pakistan Cricket Board, Ijaz Butt, has hit back angrily at the claims and says he will report Broad to the ICC.

"It is very unfortunate what he has said - all he has said is totally untrue and fabricated," added Butt. "In any case, people who escaped the tragedy without even a scratch should not be pointing fingers at the same security men who died saving them."

Seven Sri Lankan players and their English assistant coach, Paul Farbrace, were injured when the team bus came under attack near the Gaddafi Stadium. Then Broad and the umpires, who had been travelling just behind the cricketers, were left fearing for their lives.

"We were promised high-level security and in our hour of need that security vanished and they left us to be sitting ducks," said Broad.

The PCB have launched two investigations to find out if there was a lapse in security. And Broad, speaking on his return to England yesterday, admitted to wondering why those arrangements had changed on Tuesday.

"On the first two days of the Test, both buses left at the same time with escorts," said Broad. "On Tuesday, the Pakistan bus left five minutes after the Sri Lanka bus. Why?

"It went though my mind as we were leaving the hotel, 'where is the Pakistan bus?' After the attack you think 'my God, did someone know something and they held the Pakistan bus back?'"

But, speaking in Hindi at a news conference today, Butt said: "Chris Broad's statement is fabricated. There was no change in the level of security.

"I will lodge a complaint with the ICC against his statement."

The attack left six policemen dead. But Australian umpires Simon Taufel and Steve Davis, both of whom were travelling with Broad, supported the referee's claims of lax security, while Sri Lanka spinner Muttiah Muralitharan doubted whether the police travelling with the team had been experts.

"Muralitharan's allegations that there were no security personnel travelling with the team bus is also untrue," said Butt. "There are two high-powered investigations and we should refrain from commenting on the incident until the agencies complete their probe."

Tuesday's attack has cast serious doubts over whether next month's Indian Premier League should go ahead.

IPL boss Lalit Modi insists the tournament will proceed as scheduled between 10 April and 24 May. But organisers today announced that matches would be shifted within that period to avoid clashes with month-long elections taking place throughout India.

Government officials had expressed doubts about being able to provide full security for both events in the same city at the same time.

England, meanwhile, can remove Tom Moody's name from their list of candidates to replace Peter Moores as head coach. The highly-regarded Australian has rejected an approach from a head-hunting firm appointed by the ECB.