Immigration authorities in Kerala nabbed Nizamuddin, an accused in the 2003 Marad massacre, on his arrival at the Cochin International Airport from Qatar on Friday morning.Nizamuddin had been absconding since the Marad incident and the state police had issued a look out notice for him.Nine persons had lost their lives in the massacre that took place on Marad Beach near Kozhikode on May 2, 2003.