Believed murdered: Sharron Phillips. Photo: SuppliedPolice are being urged to re-investigate the 1986 disappearance and suspected murder of Brisbane woman Sharron Phillips, as new allegations continue to emerge.

Police Commissioner Ian Stewart said cost would not impact a decision to reopen a cold-case investigation where life had been lost.

That comes despite comments from a senior cold case officer on Thursday, who said land next to the Phillips’ household might prove too costly to search.

Commissioner Stewart said he would need to consider suspicions raised by members of the Phillips family, and was happy to take their views into account.

He said there was a cold case process, and no decision had yet been made whether to reopen the case.

He would not comment on whether the investigation had been botched, despite suggestions the alibi of Bob Phillips may not have been corroborated.

Bob Phillips’ eldest siblings on Friday questioned his father’s alibi, saying he did not own a truck in 1986.

They did not accuse him of Sharron’s murder but want aspects of the 30-year-case re-examined.

Mr Phillips told police he went to Gilgandra to pick up “one of our trucks”, returning by “4am or 5am”, when Sharron disappeared.

The minimum time to complete the would be 17 hours.

A second retired homicide detective David Danslow, who took over the case from detective Bob Dallow in 1994, said there was nothing on the police file questioning Mr Phillips’ alibi.

“All the statements I read had Bob and Dawn going down to TNT in Brisbane and then going down to New South Wales, Gilgandra or something like that,” Mr Danslow said.

However Mr Danslow – who retired in 2015 – said he had not seen any corroborating statements on the police file about the trip to Gilgandra to collect a truck.

“Look I will keep an open mind about everything, but I would really be surprised if Bob Phillips has killed his daughter.

“Well, it was never done then. Believe me there were a lot of things that should have been done, that probably didn’t happen back then.”

Mr Danslow said there was no reason to suspect Mr Phillips.

“I have never seen anything to implicate the family,” he said.

“The family were the greatest critics of the police and always up the police almost every day.”

Mr Danslow questioned the need to search the block of land near the family house at Riverview without direct evidence.

He doubted the land had ever been searched.

“I would suspect not, because there was never anything to implicate the family,” he said.

The ability to reinvestigate can be impeded by time, Commissioner Stewart said.

“But on the upside, we have a whole raft of technology in our favour.

“Cost is rarely an issue.”

Fairfax Media is aware investigations by detectives into the Sharron Phillips the case are now active.

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