>> Five people have been arrested in Brussels after the city's crime laboratory was set alight in the early hours of Monday. They were questioned and have since been released. Belgium prosecutor said, a car rammed through the facility's gates at about 2 AM local time, before several attackers started the blaze.
No one was in the building and there were no casualties. Police are treating the case as arson.>> We are clearly talking about the criminal act. Thesis of terrorism cannot be confirmed yet.>> Media reports suggest the attackers may have been trying to destroy forensic evidence, as the lab housed sensitive material.
Belgium remains on high alert since it was hit by bomb attacks in March claimed by Islamic State.