Local reports indicate Gabriel Kola Abiodun was killed on Thursday morning by gunmen suspected to be armed robbers at the diocesan office complex of the church in Akure.
An eyewitness told the website Sahara Reporters that three gunmen attacked the 60-year-old father of four after he had returned from making bank transactions.
The witness who wished to remain anonymous, said: "The man (financial administrator) had just returned from one of the new generation banks where he had gone to withdraw some funds, which we learnt was probably meant for retirees.
"The money was about N500,000 (£1,065). He was shot in the thigh.
"I think the armed robbers attacked him, collected the money, before they escaped from the premises. By the time we came out of the building, there were blood stains everywhere on the floor.
"It's a very sad thing."
Femi Joseph, spokesman of the Ondo Police Command, confirmed the incident to Sahara Reporters.
"Yes, it is true the man was shot, but we are now investigating the case and his body has been evacuated," Joseph said.
Meanwhile, the Anglican Bishop of the Akure Diocese has suggested that bank officials may have been involved in the shooting.
Rt Rev Simeon Oluwole Borokini said in a message to the police: "Don't forget that a few months ago, one of our priests went to collect money from the bank and he was trailed to the school and the money was stolen from him.
"We suspect some of the people who work in these banks, and we think there is a form of networking between them. These bank officials should be warned."
Security around the church has since been increased.
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