Hire a private investigator

Hi -

My name is Eric Carter-Landin and I am the big brother of Jacob Landin. Jacob was murdered 36 years ago and his killer has never been charged or prosecuted. I was able to get the case reopened by the New Mexico Attorney General. The case isn't moving as fast as it should in my opinon and the AG asked us to gather evidence for them. I am not an investigator so I would like to hire one to help find the evidence.