Inspector General of Police CD Wickramaratne has delivered a special statement regarding the 2019 Easter Sunday attacks.
According to the statement, 723 persons have been arrested in relation to the 2019 bombings thus far.
311 suspects among the group are still in custody.
IGP CD Wickramaratne said the attacks carried out on the 21st of April 2019 were not planned within a short timeframe by Zahran Hashim and his group.
The IGP said when analyzing incidents that occurred before the bombings on Easter Sunday, they can come to a conclusion that coordinated attacks were planned over a lengthy period of time.
IGP Wickramaratne said 100,000 phone records have also been examined in relation to the attacks.
He said at present criminal investigations are being carried out confidentially.
IGP CD Wickramaratne said therefore proving detailed information to the general public could compromise the judicial proceedings related to the bombings.