Set in a distant future, reports of alien and drug traffickings have been on the rise and there was mounting pressure for Mr User6760, president of intergalactic interpol to resign. The traffickers made use of stolen tech to achieve fractional light speed travel and stealth to evade the space cop, now Mr User6760 must stop these traffickers or step down if there is still no result by the end of the term.
I am wondering what technology can be used by space cop to capture a suspicious spacecraft traveling at sub-luminal velocity without committing unlawful 2nd or perhaps even 3rd degree murder?
No FTL tech and arrest must be made before suspects exit heliosphere, the boundary between intergalactic free space and the jurisdiction aka furthest reach of the law. BTW we have identified that the stolen tech is actually antimatter propulsion engine so try not to sabotage it, we are space cop not space mafia!