Sunday's attack on St Francis Catholic Church in the Nigerian town of Owo killed 22 people and injured 50, an official from the National Emergency Management Agency said on Tuesday.
Unknown assailants attacked the congregation with guns and explosives during Pentecost Sunday mass. Authorities had not previously released any casualty figures. Media reports had said more than 50 people were killed.
It is not uncommon for conflicting casualty figures to emerge in the aftermath of disasters in Nigeria.
Authorities have not given any information about the identity of the attackers or their motive.
Police said on Monday they had recovered unexploded bombs as well as casings from bullets used in AK-47 assault rifles.
They said some of the attackers had positioned themselves among the worshippers while others fired into the church from different directions.
Survivors were being treated in hospital for lacerations, bullet wounds and blast injuries, doctors said.
Keiko Fujimori declared winner of Peru presidential race
Ukrainian rescuers clear rubble as Kyiv mourns 30 killed in Russian attack
Monaco blast suspect is a Ukrainian woman who fled to Germany
Clinical trials begin for two potential Ebola treatments
India issues notice to Telegram, Signal on concerns over usernames, source says
Blast at Damascus cafe kills nine, wounds 20
Rebels in Indonesia's Papua kill American pilot, burn plane
Russian air strikes kill 10, injure more than 50 in Ukraine's Kyiv
