Pakistan military courts have sentenced 60 more civilians for taking part in pro-Imran Khan unrest last year, the armed forces said Thursday, after international outcry over earlier announced convictions.

Ex-prime minister Khan was arrested in May last year after being ousted from office and mounting an unprecedented campaign of defiance against the nation's powerful military leaders.

His detention over graft allegations sparked nationwide unrest, some targeting armed forces installations.

The military -- which has ruled Pakistan directly for decades at a time and still wields enormous influence -- said last summer it would try the accused in court martials closed to the public.

The process was largely opaque until Saturday, when the military announced the first 25 convictions -- prompting condemnation from the United States, European Union and United Kingdom.

"These military courts lack judicial independence, transparency, and due process guarantees," US State Department spokesman Matthew Miller said in a statement.

Announcing 60 more convictions on Thursday, the military said the court martials had now concluded.

All of the 85 men were sentenced to between two and 10 years of "rigorous imprisonment". The military did not make clear what their convictions were, listing only the location of their offences.

"The Nation, Government, and the Armed Forces remain steadfast in their commitment to upholding justice and ensuring that the inviolable writ of the state is maintained," a military statement said.

Khan's Pakistan Tehreek-e-Insaf (PTI) party said his nephew was among the men whose convictions were announced on Thursday, and that he was sentenced to a decade in prison.

"Conducting trials in military courts has undermined the fundamental rights of citizens," Khan said, according to a summary of a conversation he had with lawyers and press inside jail, released on X.