MANILA (UPDATE) - President Rodrigo Duterte on Monday hit back at the tirades of Senator Antonio Trillanes IV, saying the lawmaker has low intelligence quotient.

Speaking to reporters at the Libingan ng mga Bayani, where he led rites to commemorate National Heroes Day, Duterte said he wonders why Trillanes, a former Navy officer, survived the Philippine Military Academy (PMA), “given his character, his mouth and his low IQ.”

Responding to Duterte’s statement, Trillanes dared Duterte to an IQ test.

“Kahit plus 10 pa siya, ‘pag mas mataas score niya sa ‘kin, magre-resign ako sa pagka-Senador. Siya nga itong wala nang maisip na solusyon sa mga problema ng bayan kasi aminado siyang mahina ang kokote niya,” Trillanes said on Twitter.

(Even if we add 10 to his score (in the IQ test), if his scores are higher than mine, I will step down as Senator. He's the one who could not come up with solutions to the country’s problems because he is admittedly a dumb person.)