Ailing Kingfisher Airlines today extended its partial lockout by another three days till Sunday as talks between its management and employees failed to end the deadlock over non-payment of salaries for last seven months. The situation was further marred with the wife of one of its Delhi-based employees allegedly committing suicide, blaming financial stress due to non-payment of salary to her husband for five months. The airline also announced in the National Stock Exchange that its Company Secretary, Bharath Raghavan, has quit the company.