Three days after a massive crackdown across four states in the Rameshwaram Cafe blast case, the National Investigation Agency (NIA) on Friday arrested one more accused, identified as an ex-convict in a Lashkar-e-Taiba (LeT) terror conspiracy case. 35-year-old Shoaib Ahmed Mirza is a resident of Karnataka's Hubbali and is the fifth accused to be arrested in the case. The NIA investigations revealed that Mirza, convicted earlier in an LeT conspiracy case, got involved in this fresh conspiracy after being released from jail.