Korean national Choi Kyung Jin weeps Thursday during a Senate investigation into the murder of her husband, Korean businessman Jee Ick Joo. Beside her are South Korean embassy representatives. Erik De Castro, Reuters

MANILA - President Rodrigo Duterte is set to meet Monday the widow of Korean businessman Jee Ick Joo, who was allegedly killed by rogue cops in a kidnapping for ransom scheme.

Jee's widow, Choi Kyung Jin, will be accompanied by Korean Ambassador to the Philippines Kim Jae-shing during her meeting with Duterte at the presidential palace, according to the president's schedule released by Malacañang.

Duterte on Sunday abolished the Anti-Illegal Drugs Group after its director, Atty. Rafael Dumlao, and several other members were tagged in Jee's murder.

The President added that the suspects were still at large and gave them 48 hours to turn themselves in, or have a dead-or-alive bounty on their heads of P5 million, for which he would prefer them dead.

The Philippine National Police has also suspended all anti-narcotics efforts to focus on the "internal cleansing" of its 165,000-strong force.

More than 7,000 people have been killed since Duterte, nicknamed "the punisher," unleashed his bloody crackdown seven months ago, some 2,250 in police operations and the rest still mostly under investigation.

Police say many of those so far unsolved could be the work of vigilantes or inter-gang drugs violence.

The campaign has caused alarm in the West and rights groups have accused Duterte of turning a blind eye to a wave of extrajudicial killings by police, mostly of low-level peddlers.