does your police have a special department for criminal investigations, with a sub for murder-cases ? then the question is: why are they (considered?) so inferior to (and by) the shin bet ?... imo: if shin bet is better qualified to find the killer, because they have better "trained" staff, then they should go on... but if they need (unacceptable) torture, to find the truth, they might need additional training as well... Question 2: why was the case (really) handed to shin bet ?... because they are operating legally in a greyzone and can apply not-so-legal methods, or because they are better trained, more qualified ?,,, maybe the answer to all this is, that your police isnt really qualified to investigate complex cases ?
Saudis warns U.S. that 9/11 responsibility law would erode investor confidence in America (Reuters)
from the article: Shin Bet accused of exceeding its authority in Mer-Khamis murder case