KARACHI  - At least six people were shot dead in firing incidents in different parts of Karachi.According to details, son unidentified gunmen opened fire in Haideri Market area and wounded a man named Shafiq. He was rushed to nearby hospital where he succumbed to his wounds.In another incident of firing, 22-year-old Niaz was shot dead in the jurisdiction of Risala Police Station while dead body of a youth was recovered from Purana Golimar Lasbela area. The deseased was identified as Seerat Alvi.In Karimabad area, some unidentified gunmen riding on motorcycles shot dead a man identified as Sharif while target killing claimed a life in Qasba More.Meanwhile, Quaidabad police have claimed the arrest of four dacoits, including Amir, Aurangzeb, Nazakat and Nadeem. Two other dacoits were arrested after an encounter in Aziz Bhatti area while Rangers have handed over an accused of Lyari gang war, Waseem, to police.The menace of targeted killing has claimed several lives in the provincial metropolis. The efforts of law-enforcement agencies against criminals and saboteurs have somewhat fallen off recently. 18 fishermen go missing:  At least 18 fishermen went missing in open sea when their boat overturned because of the high tides here on Sunday. Al-Rehman boat carrying some 45 fishermen got stuck in open sea and drowned near Ibrahim Hydri beach. Fisherfolk Forum said that other fishermen  reached there and managed to rescue 27 fishermen while 18 of them are still missing.