The Muslim Media Watch Group of Nigeria on Monday condemned in strong terms the Sunday's killings in St. Philip's Catholic Church, Ozubulu, near Nnewi, Anambra.
A gunman stormed the church and killed at least eight worshipers and injured 18 people.
The group made the condemnation in a statement issued in Abuja on Monday by its National Coordinator, Alhaji Ibrahim Abdullahi.
Abdullahi described the perpetrators as dare-devil murderers who stormed Ozubulu Catholic Church in Anambra State and killed scores of people during an early-morning mass.
"This is the hand work of terrorists within the community who were reportedly living abroad but came home for what only God knows.
"The Muslim Media Watch Group of Nigeria condemns in strong terms this sacrilegious and terrible act.
"This crime must be properly investigated and culprits should be urgently arrested before they escape from the community."
According to Abdullahi, it is commendable that the Police in Anambra State have useful information on the background to the crime as narrated by the Anambra State Commissioner of Police.
"This information should be properly processed to give a lasting solution to addressing acts of terrorism of this nature which must not go unpunished.
"Meanwhile, the elites in our midst sending their children and wards abroad to study, must examine the negative aspects of their action on their children.
"Some of which include bad culture of killing innocent people with reckless abandon, joining irresponsible clubs where crimes are perpetrated to revenge certain acts, use of dangerous drugs and various acts of terrorism."
The national coordinator said that wealth should be channeled to positive ventures such as teaching the children the way of God and worshipping of Him whole-heartedly.
According to him, children should acquire the training they are given on how to imbibe and practice good character in addition to educational pursuit.
"All these could be achieved here in Nigeria easily.
"Parents and guardians living in the country should as well discourage their children from watching dangerous movies which serves as training ground from breeding criminally-minded children," Abdullahi said.