The brother of Mumbai police officer Sachin Waze, who was held by the NIA over the recovery of an explosive-laden vehicle near Mukesh Ambanis residence, on Sunday said the investigators did not inform the family about his arrest and they came to know about it through media. Sudharma Waze also alleged that his brother Sachin is being implicated in the case. The family was not told about his (Sachins) arrest by the investigators. The family came to know about the arrest through media. The investigators did not contact the family, he told a regional news channel. He also said that he had met his brother a couple of days back, who looked tense. The National Investigation Agency (NIA), which is probing the last months recovery of the explosives-laden vehicle from near Ambanis house in south Mumbai, arrested Waze late night on Saturday after over 12 hours of questioning. The NIA spokesperson had said said Waze has been arrested for his role and involvement in placing explosives-laden vehicle near Carmichael road on February 25. The case was handed over to the NIA after the mysterious death of a Thane-based businessman Mansukh Hiran, who had claimed that the vehicle had been stolen a week earlier. His body was found in a creek at Thane on March 5. Hirans wife had claimed that her husband had given the SUV to Waze in November, which the officer returned in the first week of February. A court in Mumbai on Sunday remanded Waze in NIA custody till March 25 in connection with the case.