"Why Nitish Kumar is silent on Yasin Bhatkal arrest? Abhyanand (Bihar DGP) has been put forward to tell lies about the arrest and concealing the facts," Modi said on twitter.
"Why Bihar police was in haste to get rid of Yasin? IB chief persuaded Bihar to take Yasin in custody, but Bihar police handed him over to NIA," the former deputy chief minister said.
The BJP leader reaction came after defence of the state government was done by Director General of Police Abhyanand at a press conference earlier during the day.
Modi charged the Nitish Kumar government with seeking to wash its hands off the arrest of Bhatkal and his associate Asadulla Akhtar alias Haddi for "political reasons" (to safeguard its minority votes).