MANILA - President Rodrigo Duterte on Wednesday said he has ordered police to kill his own son, Davao City Vice Mayor Paolo Duterte, if the latter is caught involved in the drug trade.

Duterte reiterated this vow amid Sen. Antonio Trillanes IV's allegations that the President's eldest son was part of a Chinese drug triad.

“Ang order ko nga non na 'pag may anak ako nasa droga, patayin niyo para walang masabi ang tao,” Duterte said in a speech during awarding rites for civil servants in Malacañang.

“Ang sabi ko kay Pulong, my order is to kill you if you are caught and I will protect the police who will kill you,” referring to his son by his nickname.

During a Sept. 7 Senate hearing into the P6.4-billion drug shipment that slipped past the Manila port, Trillanes claimed that a tattoo on the back of the President’s son would prove that he is a member of a drug triad.

The senator also alleged that Paolo and his brother-in-law, lawyer Manases Carpio, husband of Davao City Mayor Sara Duterte, has over P100 million pesos each in their bank accounts.

He linked the younger Duterte and Carpio to the shabu shipment, which turned up at a Valenzuela City warehouse and busted by authorities in May.

In an earlier hearing, customs fixer Mark Taguba had alleged that the younger Duterte and his brother-in-law were being linked to the "Davao Group," which allegedly facilitated shabu smuggling at the Bureau of Customs.

Taguba, who brokered the questioned shipment, claimed he had given millions in grease money to the Davao Group. A day after his testimony, he released a statement to the media clearing both Duterte and Carpio.

Accusing the Dutertes of keeping ill-gotten wealth, Trillanes again dared the President to issue a bank secrecy waiver on his bank accounts.

• READ: Trillanes signs waiver on alleged bank accounts, dares Duterte to do same

During last year's campaign, Trillanes claimed that the President, then the Davao City Mayor, had failed to declare P211 million in 17 accounts.

The President earlier defended his son and son-in-law from Trillanes' allegations, calling his evidence against them "trash."

He also accused the senator of maintaining offshore accounts where the latter supposedly hid money.

After Trillanes proved that his supposed Singapore bank account Duterte had made public does not exist, the President said he just "invented" the account number to catch the lawmaker.