Hasnat Abdullah, coordinator of the Anti-Discrimination Student Movement, said that the protest of the students would continue until the chief justice and other judges of the Appellate Division resigned.
He was speaking at the Supreme Court premises on Saturday afternoon.
Chief Justice Obaidul Hassan announced his resignation by the evening.
He said that he will submit his resignation letter to the president as per the rules. When asked what the other judges would do, the chief justice could not say anything about them.
Hasnat Abdullah said: "The movement will continue until the chief justice and other judges of the Appellate Division resign."
Until then, he urged everyone to stay on the streets.
Chief Justice Obaidul Hassan had called a full court meeting on Saturday, involving all judges of both divisions of the Supreme Court, but later announced its adjournment.
The protesting students have referred to this full court meeting as a "judiciary coup."
In response, they announced a program to besiege the High Court.
Subsequently, Hasnat Abdullah, coordinator of the Anti-Discrimination Student Movement, issued an ultimatum for the resignation of the Appellate Division judges, including the chief justice.
Around 11am on the High Court premises, Abdullah declared: "If you do not resign, we will surround the residences of the Chief Justice and the other party judges and force them to resign."
The students then positioned themselves on the court premises, chanting slogans demanding the resignation of the judges.