The CBI has arrested Bharat Mathur, senior vice president of a major corporate group and deputy director general of civil aviation, in a Rs 2.5 lakh bribery case to facilitate the import of drones for another private company, officials said on Sunday.In an operation on Saturday, the CBI arrested Mathur, who is also linked to an aerospace company involved in drone imports, and Mudavath Devula, deputy director general in the airworthiness directorate of the Directorate General of Civil Aviation (DGCA), Headquarters, New Delhi.The accused DGCA public servant allegedly demanded undue favors from private individuals in return for issuing approvals and permissions for applications pending with the DGCA for a private aerospace company, a CBI spokesperson said in a statement.“CBI arrested the Deputy Director General in the Directorate of Airworthiness, Directorate General of Civil Aviation (DGCA), Headquarters, New Delhi along with the representative of a private company in a bribery case of Rs 2.5 lakh, resulting in seizure of the entire amount,” it said.The statement said the CBI conducted searches at the premises of the accused public servant and other private individuals at four locations in Delhi, resulting in the seizure of cash worth Rs 37 lakh along with gold and silver coins and several digital devices.