Key witness Miki Ganor wants to retract testimony in Case 3000, even though prosecutors assert his actions won't change the case.
Miki Ganor, who testified in Case 3000, may loose partial immunity if he changes his testimony.
The police corruption investigation focuses on Israel’s purchase of German-made naval vessels.
Detention of former top officials extended
The affair concerns the procurement of three submarines and four maritime installation protection vessels for the Israel Navy.
Judge hints at new developments in investigation that have not yet been made public.
Tuesday's detention comes after six suspects were detained for questioning on Monday.