"It is important to see whether the government takes similar action against other tainted ministers," said Munde, who was with the BJP before joining NCP.
"The MIDC land scam is a serious matter and a fair and thorough investigation should be done," he said.
Meanwhile, local builder Hemant Gavande, who first flagged the questionable land deal in Bhosari involving Khadse's family, said he would keep pursuing the case.
"Since he has resigned, I demand free and transparent probe in this matter...I will take the case to its logical conclusion," Gavande said.
The senior BJP leader should "introspect about his misdeeds", he said, welcoming Chief Minister Devendra Fadnavis's decision to appoint a retired High Court judge to probe the charges against Khadse.