Human rights groups have criticised Saudi Arabia after the kingdom executed 37 men convicted of terror-related crimes.
One of the convicts was crucified, according to an interior ministry statement carried by the Saudi Press Agency.
The agency reported that some of those executed had been accused of bombing security headquarters or killing security personnel.
In a statement, the interior ministry said authorities "will not desist of deterring anyone who may think of trying to harm its security or stability as well as the nationals or the residents".
Saudi Arabia has one of the highest death penalty rates in the world, and executed 47 people in January 2016.
At least 104 people are thought to have been executed so far this year.
All 37 men executed this week were Saudi nationals.
Amnesty International called the latest deaths a "shocking execution spree".
Lynn Maalouf, the organisation's Middle East research director, said: "Today’s mass execution is a chilling demonstration of the Saudi Arabian authorities callous disregard for human life.
"It is also yet another gruesome indication of how the death penalty is being used as a political tool to crush dissent from within the country’s Shi’a minority."
The charity added that one of the executed men was young Shi’a man who was arrested at the age of 16.
Michael Page, deputy Middle East director at Human Rights Watch, observed: “Saudi authorities will inevitably characterise those executed as terrorists and dangerous criminals, but the reality is that Saudi courts are largely devoid of any due process and many of those executed were condemned based solely on confessions they credibly say were coerced."