Vladislav Surkov, a longtime Kremlin aide considered the architect of the political system created under President Vladimir Putin, has resigned his post of deputy prime minister.

His resignation was announced by a statement posted Wednesday on the Kremlin website.

It follows a public feud with investigators over a criminal investigation into Skolkovo, a government project to promote innovation modeled on Silicon Valley. Surkov was overseeing the ambitious project.

He worked under Putin in the Kremlin administration from 2000 to 2008 and is widely seen as the architect of Putin's political system, known as "managed" or "sovereign" democracy.

Surkov stayed in the Kremlin to work with Dmitry Medvedev when he succeeded Putin as president. He took up his current post in late 2011.