How did Edward III take power from Roger Mortimer in 1330?

Following the deposition of Edward II in 1327, Edward III spent three years under the regency of his mother, Isabella of France, and her lover, Roger Mortimer. By 1330, the young king sought to end his dependence on their rule, which had become increasingly unpopular due to Mortimer’s arrogance and policies, such as the Treaty of Northampton.12

In October 1330, while a council was being held at Nottingham, Edward III took decisive action. With the support of Henry, earl of Lancaster, the king entered the castle by night through a secret subterranean passage. He successfully seized Mortimer and had him conveyed to the Tower of London. Mortimer was subsequently condemned by his peers in Parliament for his crimes and was executed at Tyburn in November 1330. Following this, Edward III began to rule in his own right, while his mother was sent into retirement.123