Mr Kibao’s killing comes amid concern by the opposition and rights teams of a clampdown on political exercise.
“We can’t enable our individuals to proceed disappearing or being killed like this. The lives of Chadema leaders are at the moment in danger,” Mr Mbowe informed AFP.
Mr Kibao was a retired navy intelligence officer and joined Chadema in 2008. He will likely be buried on Monday within the Darigube district of Tanga metropolis.
The killing of Mr Kibao has sparked widespread condemnation throughout Tanzania, with many asking the federal government to take motion over experiences of a number of different individuals being kidnapped and killed.
Final month senior Chadema leaders, Mr Mbowe and his deputy Tundu Lissu, had been arrested after they tried to carry a youth rally.
Police banned the rally, saying it was meant to trigger violence.
In July, an artist was accused of burning a picture of President Samia and sentenced to 2 years in jail.
Many individuals worry Tanzania might be returning to the repressive rule of late President John Magufuli, regardless of his successor Ms Samia lifting a ban on opposition gatherings and promising to revive aggressive politics.
In August, Human Rights Watch mentioned the rise in arrests of opposition activists was a “dangerous signal” with the 2025 presidential elections across the nook.