The threat level from terrorism in Northern Ireland remains severe, the Government has warned, as it emerged six people have died in paramilitary attacks this year.
Northern Ireland Secretary James Brokenshire also said 103 people have been arrested in connection with terrorism in the country in 2016, as he called for vigilance "in the face of this continuing threat" from dissident republicans.
In a written statement to Parliament, Brokenshire said the threat level in Northern Ireland remains severe, meaning an attack is highly likely.
He added that the threat to the mainland remains substantial, having been raised from moderate in May, which means an attack is a strong possibility.
Brokenshire said: "In Northern Ireland, these terrorists have targeted the brave people who serve the community day in, day out, including the police, prison officers and the military.
"Dissident republicans are relatively small, disparate and factional groupings, but they are also determined and have lethal intent."
Six people been have killed as a result of paramilitary activity this year, Brokenshire said, with 17 people injured in shootings and 57 in assaults.
The statement also said there had been 103 arrests, 17 people charged and five recent convictions in connection to terrorist activity in Northern Ireland throughout 2016.
There have also been three further attacks on security personnel since the death of prison officer Adrian Ismay in March, Brokenshire said.
However, there have been just four national security attacks in 2016, down from 16 last year and 40 in 2010.
The statement makes reference to the discovery of "a large amount" of terrorist material in Northern Ireland, such as firearms, high explosives, chemicals and a range of improvised explosive devices, as well as the arrest of one individual which led to the recovery of a "significant amount" of terrorist material.
