He said the training was aimed at bolstering security and alleviating fears of insecurity in Niger and the country at large.
He warned that no private or state-owned security apparatus would be allowed to operate during and after the election.
The husband said Mrs Ruth and four of her colleagues went missing on February 13 after an ambush during their official assignment to Abia.
According to him, the suspect, in a written statement during police interview, freely admitted to having committed the fraud and several others dating back to 2021.
Mr Yusuf, while commending the I-G for his timely intervention to the command, called on the officers and men to redouble their efforts.
Mr Baba-Alkali said this during a meeting with leadership of political parties and other stakeholders on Thursday in Abuja.
Mr Adejobi said that 17 officers would benefit from the first batch of Bell 412EP B1.3 Type-Training Course.
Mr Baba also assured that the police would manage any security challenge that may come up before, during and after the election.