By Manpreet singh and Indrani Basu Navi Mumbai: The Sikh community across Navi Mumbai and Raigad observed the Shaheedi Gurpurab of Sri Guru Arjan Dev Ji Maharaj, the fifth Sikh Guru and the first martyr in Sikh history, with deep devotion, prayer, and community service on Thursday. Special religious programmes were organized at Gurudwaras in Kharghar, Kamothe, Nerul, CBD Belapur, Panvel, and nearby areas, drawing large numbers of devotees.