Authorities revealed new information about the father of the suicide bomber. Here is what we know. A former Libyan Security official says the father of the bomber has ties to an Al Qaeda Backed group in libya. They have announced it is clear they are dealing with a terrorist network. One involved a controlled explosion to get inside. The threat level is at the critical level with significant increase in police patrols. The military is guarding sites around the country so that more Police Officers can participate in the investigation. Jay has more from manchester. The investigation in manchester is growing. At least three more people arrested as we learn more about the suspect in the deadly blast. Intelligence sources tell s Salaman Abedi like lie received training overseas. He may have been a part of a larger cell planning other attacks the Terror Threat has been raised to its highest possible level. It is clear this is a net wovg we are investigating. It brings with it police on patro