Sankareh said Cham chose to resign in the midst of controversy in order to protect the institution from the effects of public accusations and counter-accusations while making himself available for any investigation that may follow.
"The allegations are very serious allegations, and in order to spare the institution the agony of having to go through all these allegations and counter allegations, he has decided to step down."
The resignation, which was accepted by President Adama Barrow, has generated widespread public discussion and calls for an independent inquiry into the allegations.
However, Sankareh cautioned against interpreting either the resignation or the government's acceptance of it as confirmation of guilt.
"President Barrow is not judge and jury and prosecutor, allegations were made; the Chief of Defence Staff resigned, as he resigns, he avails himself to be investigated."
The government spokesman said the administration recognizes public interest in the matter but stressed that any investigation must follow established procedures.
"Governments are not magicians; governments are thoughtful; there are processes."
According to Sankareh, any inquiry would require qualified and impartial individuals capable of examining the allegations fairly and independently.
"If there is going to be an investigation, you have to find experts in that domain. You have to have competent, qualified citizens, people with impeccable character, because the man is asking for impartiality."
He further warned against drawing comparisons with the era of former President Yahya Jammeh, arguing that individuals should not be condemned solely on the basis of accusations.
"If somebody is going to Mile Two, let them go based on established legal parameters that they were tried judiciously and they were found guilty, but just to fix people out of allegations and put them into Mile Two, I think is a disaster."