Borwankar arrived here last night and was briefed by Deputy Inspector General (prisons) Rajendra Dhamne and the superintendent of Nagpur prison Yogesh Desai.
Desai had overseen the execution of Ajmal Kasab, the 2008 Mumbai terror attacks convict, when he was posted at Yerwada prison in Pune.
Borwankar declined to talk to the media, saying the officials had been directed not to speak on the subject.
After the Supreme Court dismissed his curative petition, Memon has submitted a mercy petition to Maharashtra Governor. He has also moved the apex court afresh for a stay to the execution.
Yesterday the home department of Maharashtra government sanctioned Rs 22 lakh by issuing a government resolution to install an overhead grill-ceiling at the 'hanging yard' cell in Nagpur prison in view of Memon's likely execution.