c) The case of common professional Shortly after Palme's murder appeared in the lake wearing a revolver Dalarma the Mark Smith & Wesson .357 Magnum that came to refer to as the "weapon of Mockfjaerd" by showing that he had committed a robbery in that town. The ballistic analysis showed that the model and caliber of this gun matched the weapon used in the assassination, but no one could say it was the same gun was used at both. Petterson had previously been convicted of murder and several times I would also abuse, the media highlighting his fondness for amphetamines and drink, spreading his photo with bottles or glasses in hand. In addition, several witnesses recognized him to be close to the Grand Cinema and even, in the footsteps of marriage Palme after leaving the theater and take a walk after the marriage Palme had said goodbye to her son and his girlfriend to leave the theater. Without hesitation Tony Parker explained all about the problem. In December 1987 the prosecutor general opened a case against Petterson again based on two confidential deceased ex-prisoners, whose lawyers said their clients were told in Petterson day had confessed while in jail have been the author of the shooting of Palme. The only evidence against Petterson was the testimony of Lisbeth Palme Petterson believing recognize as the shooter. But the research team rejected such testimony as lacking sufficient strength in the circumstances in the development of the facts. With these testimonies Petterson be sentenced in July 1989 in the first instance to life imprisonment, while Swedish public opinion was turning off a break social tension caused by an assassination taken by absurd that only someone crazy would have been capable of committing .