The incident occurred months after five miners were killed at a mining site after gunmen invaded Gero village, Gy district of the Jos South area of the state.
The police said the vandalised cable and a cutlass were recovered as exhibits.
The army said troops had intensified patrols across the area to prevent further attacks.
The suspect was arrested on Wednesday at about 10:30 p.m.
Mr Disu charged the officers to uphold professionalism, accuracy and responsiveness in the discharge of their duties.
The commission said Justice Osiagor ordered Mr Pelumi to undertake seven days of community service based on the sentencing.
Mr Iniedu described Mr Jonah as a seasoned police officer.
This comes amid rising insecurity in the country.
The police said the victim sustained serious head injuries and was immediately rushed to hospital, where he was confirmed dead.
Mr Wike also accused Mr Amaechi of failing to account for funds spent on projects during his tenure as governor of Rivers State.
