Xinhua world news summary at 0030 GMT, Oct. 22

A passenger train from Cameroon's capital Yaounde to economic capital Douala derailed on Friday at around 12:00 local time (5 a.m. GMT), leaving 53 killed and about 300 injured, state radio CRTV reported.

The train derailed in Eseka station in Central Region, around 120 kilometers from Yaounde. (Cameroon-Train-Derailment)

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LONDON -- British media said on late Friday that police had uncovered a terror plot targeting the London underground as a 19-year-old man planning the bomb attack was arrested.

The Daily Telegraph reported that the young man was arrested by counter-terrorism officers on Friday, one day after the suspect device was found on board a train in London. (Britain-Police-Terror Plot)

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TEHRAN -- Iran said it would call its technicians and engineers back home from the Iraqi northern city of Kirkuk following the deadly attack by Islamic State (IS) militants, reports said on Friday.

Earlier in the day, Iran's Foreign Ministry announced that four Iranian technicians were killed in the attack by the IS militants on a power plant in Kirkuk, official IRNA news agency reported. (Iran-Iraq-Recall Technician)

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CAIRO -- Two Egyptian policemen were killed and another one was injured on Friday in a bomb attack in the country's restive North Sinai governorate, the Egyptian Interior Ministry said.

A bomb planted on the ring road in North Sinai's al-Arish city struck a police vehicle, killing two policemen and injuring a conscript, the ministry said in a statement. (Egypt-Sinai-Police) Endi