GERRY McCann hit back yesterday at “ludicrous accusations�?over daughter Madeleine’s disappearance.

Devastated Gerry, who flew back from Portugal with wife Kate and their twins last weekend, said there was NO evidence against the couple.

Today dectectives said they have “nothing concrete�?to implicate the McCanns in Madeleine’s disappearance and may be depending on them making a confession, a Portuguese newspaper reported.

A “high-ranking�?Policia Judiciaria officer, who was not named, told 24 Horas: “We have nothing concrete.

“There are a lot of indications, but without more elements it’s impossible to determine what happened in those four vital hours in the case (between 6pm and 10pm on the night Madeleine vanished).

“Even if the blood and traces gathered in the car or in the apartment were confirmed to correspond 100 per cent to the little girl’s DNA, that wouldn’t prove anything.

“Those elements could only confirm - and that doesn’t even happen - that the little girl was in the apartment (which is obvious) and in the car.

“In either of the cases nothing would prove homicide, just that the body of the little girl had been transferred in the vehicle.

“We don’t know if Madeleine is dead, and if she is, how it all happened.

“Was she strangled? Could she have been beaten? They are questions only the parents could clarify in an eventual confession.�?/P>

Other Portuguese newspapers claimed police are investigating whether the McCanns had any “accomplices�?in allegedly disposing of Madeleine’s body and concocting a false story.

Detectives have admitted that the young girl’s body may “no longer exist�? according to the Diario de Noticias.

Gerry spoke out after the McCanns were hit by a new avalanche of allegations including:

REPORTS in Portuguese newspapers that Madeleine is dead and her body has been dumped at sea in a bag weighed down by stones.

CLAIMS by a French investigative journalist that large quantities of adult sedatives were found in Madeleine’s hair recovered from the boot of their hire car;

LEAKS from Kate’s diary which portrayed her as struggling to deal with domestic life and a hyperactive Madeleine;

ALLEGATIONS the McCanns are about to be ordered back to Portugal to face new questions into what happened to the four-year-old last May.

Gerry told a pal: “There are large craters in every one of these theories, in these just ludicrous accusations.

“As far as Kate and I are concerned there is no evidence to suggest that Madeleine is dead.

“We are 100 per cent together on this, not one grain of suspicion about each other.�?/P>

One “credible�?theory of investigators are looking into is that Maddie's body was thrown out to sea in a bag weighted with stones, from a yacht belonging to an English sailor, the paper claimed, without specifying its source.

The boat is based at the marina in the town of Lagos, just a short drive from Praia da Luz, it reported.

Its owner was already under investigation based on searches on computers seized from Robert Murat, the first arguido in the case, the paper said.

Mr Murat has consistently protested his innocence, and believes he will be formally cleared shortly.

Yesterday it was claimed that Kate’s diaries show a mother under pressure, battling to cope.

Detectives in Portugal asked a judge to use emergency powers to seize a series of notebooks GP Kate has been using to write her innermost thoughts.

The cops have been poring over the pages in the hope of gaining an insight into her state of mind in the days and weeks before Madeleine vanished.