Alex was informed by the surveillance team that something was happening in Niel's house, so he headed there in a hurry. Once he got to the house he saw Niel, wounded all over, and the enemy wanting to flee.
So using his sword Alex had immobilize the enemy threat and was going to question him. When Alex was about to start questioning the enemy, the enemy suddenly collapsed. Alex with one look already figured out the the enemy was dead. He most probably has a poison pellet or something similar hidden in his molars, which he activated the moment he was sure that he couldn't escape.
Well though he couldn't talk, as long as the body is intact he could still gain some information regarding the enemy. Alex then proceeded to call the police chief telling him to come over with some of his men.
