Philippine President Rodrigo Duterte has named several government officials, including judges, members of Congress and military officers accused of having links to the illegal drug trade, just hours after vowing to maintain his "shoot-to-kill" order against drug dealers.

In a televised national address early on Sunday morning, Duterte declared that the officials he accused would have their day in court, but quickly added while reading the list that "my mouth has no due process". 

He justified his reading of the list, saying he has a sworn duty to inform the public about the state of "narco-politics" in the country. 

Dozens killed in first four days of Duterte's drug war

According to the news website Rappler, Duterte named a total of 158 officials, many of whom are police and military officers, but also include three members of Congress and seven judges. 

Duterte was speaking from his constituency of Davao, where he served as mayor before winning the presidency.

Earlier on Saturday, Duterte had vowed to keep his "shoot-to-kill" order "until the last day of my term if I'm still alive by then".

"I don't care about human rights, believe me," he said, according to official transcripts released by the presidential palace.

About 800 people have been killed since Duterte won a landslide election in May, according to reports by the local press, which has been tracking reports of extra-judicial killings.

'I'm waging a war'

He said government officials who use their positions to engage in a trade that wrecks the lives of many Filipinos were first on his list.

Duterte said he was also offering soldiers and police his "official and personal guarantee" of immunity from prosecution for killings undertaken in the performance of their duties.

Death toll rises as Philippines intensifies war on drugs

In a homily to be delivered later on Sunday, Catholic leader Archbishop Socrates Villegas condemn the latest killings, saying, "I am in utter disbelief. If this is just a nightmare wake me up and assure me it is not true. This is too much to swallow.

"From a generation of drug addicts, shall we become a generation of street murderers?" Villegas, president of the Catholic Bishops’ Conference of the Philippines (CBCP), said in a statement posted on his website.

The UN anti-drugs office on Wednesday joined international rights organisations in condemning the rash of killings.

"The United Nations Office on Drugs and Crime remains greatly concerned by the reports of extrajudicial killing of suspected drug dealers and users in the Philippines," its executive director Yury Fedotov said in a statement.

But Duterte said he is waging a war, and is "now invoking the articles of war".

Police say more than 500,000 people have surrendered to the local authorities and pledged to stop using illegal drugs.

Source: Al Jazeera and agencies