Runaway Initially the main theory was that thirteen-year-old Alvar had
run from home. However, it is hard to explain why Alvar would not have dressed up more with heavier shoes, eaten breakfast, brought his money and/or used his bicycle if he had planned to leave. A boy of Alvar's age had been seen north of
Kalmar, in
Påskallavik, but he was later identified. This was also the case for a boy who had gotten a ride by a truck driver, a boy that had been seen spending the Sunday night at the postal station in
Rottne, and other boys that had been spotted hitch-hiking in the area.
Accident That Alvar would have been alive during the week-long search and later died has been dismissed by most sources. If he had died in an accident, it would most likely have happened early Sunday, and the location of his death would have been the lake. It is just short of a kilometre from Sundslätt to the lake, and there is speculation that Alvar suddenly decided to row out in a boat. During the investigation, all the boats in the lake were checked, but one is said to have been overlooked by its owner due to its bad condition. That Alvar could not swim suggests he would not have entered a boat, but if he had, his lack of ability to swim could have become fatal. It is said that the fact that Alvar's
clogs have not surfaced at the waterside, as opposed to many other clogs, suggests that he did not drown in the lake.
Crime The first theories involving a crime were suggested on Monday, and these ideas seemed more plausible as time passed. The police received several tips about persons who had acted suspiciously, all of which were rejected. One theory was Alvar might have gone to the cellar to smoke and someone passing convinced him to follow them. == Grave-opening ==