In what circumstances will appellate counsel conduct an independent review of the proceedings below?

In this case, appellate counsel made an independent review of the proceedings below and concluded the record reflects no meritorious claims for appeal. He has advised defendant of his conclusion and advised defendant he may file a supplemental brief raising issues he believes merit appellate review. Defendant has not filed any such pleadings. Pursuant to People v. Kelly (2006) 40 Cal.4th 106, 118-119, counsel asks this court to conduct an independent review of the record. We have done so and find no issues meriting further appellate consideration.