Mr. Ndudi Elumelu, minority leader of the house of representatives, said this on Thursday while briefing journalists after a closed-door meeting of PDP members in the national assembly.
The meeting was chaired by Philip Aduda, the senate minority leader.
The development comes about 24 hours after the PDP legislators in the senate handed Buhari a six-week request to improve security in the country.
According to Elumelu, Nigeria is at a “standstill” and lawmakers can’t “stand and see the country collapse”.
“Both chambers have tried several times either by resolution or by security submit to draw the attention of Mr. President as to why there is a need for us to address the insecurity of this nation, but that has not been taken seriously,” he said.
“Of course, so many outcries by our people. Our farmers can no longer go to their various farms and I believe that we are the worst blow in terms of food production.
“Looking at the purpose our colleagues walked out in the senate, we believe that we will also join them in the same way.
“They have given six to eight weeks for Mr. President to handle the insecurity that is affecting this nation and I want to also join, on behalf of my colleagues to say that upon the expiration, we will proffer ways of ensuring that we gather all the signatures.”
Elumelu said the impeachment proceedings will be endorsed by other lawmakers who are not in the opposition because “all are affected”.
“They may not be speaking but we may be speaking for them,” he added.