People v. Nocelotl, 211 Cal.App.4th 496, 149 Cal.Rptr.3d 706 (6th Dist. Nov. 28, 2012) ([T]he advice, persuasion, or expression of [a defendant's] attorney will not suffice to vitiate his plea, in the absence of some showing of corroboration by a responsible state officer [citations]. (People v. Toth (1964) 224 Cal.App.2d 130, 132, 36 Cal.Rptr. 417; see also In re Nunez (1965) 62 Cal.2d 234, 236, 42 Cal.Rptr. 6, 397 P.2d 998 [In the absence of an allegation of state involvement. Petitioner's allegations that counsel improperly induced him to enter a guilty plea does not state a ground for coram nobis relief]; In re Atchely (1957) 48 Cal.2d 408, 418, 310 P.2d 15 [Mere advice or assurance by a private [or appointed] attorney to a defendant accused of crime will not vitiate a plea entered in reliance thereon].)).