Q: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Image copyright AFP Image caption The bodies were discovered on badly damaged boats at Fukui port in western Japan 
  
 Japanese officials are investigating after up to 11 boats were found drifting off the country's coastline - some with decaying bodies on board. 
  
 Around 20 corpses were found on wooden boats between October and November, a coastguard spokesman said. 
  
 Many of the boats have been towed to Japanese ports, but the bodies are yet to be identified. 
  
 Korean writing is reported to have been found on the vessels, leading some to suggest they came from North Korea. 
  
 Coastguard personnel spotted a boat with three sets of remains inside on Tuesday and pulled it ashore at Fukui port, Tokyo Broadcasting System reported. 
  
 The bodies were badly decomposed and partially skeletonised, it added. 
  
 This is not the first incident - in 2012, the decomposed bodies of five males were discovered off Japan's west coast. 
  
 Experts suspect the vessels are North Korean fishing boats lost due to a lack of modern equipment, according to local media. ||||| TOKYO — A total of 20 decomposing corpses have been found in wooden fishing boats off Japan's coast, authorities said. 
  
 Eleven vessels were discovered in the past two months, the most recent being towed ashore six days ago, a coast guard spokesman told NBC News on Monday. 
  
 Items found on board have fueled speculation in the Japanese press that the boats may have come from North Korea. None of the vessels have carried GPS equipment, but instead many contained fishing nets, hooks and pieces of clothing featuring the Korean hangul alphabet, the spokesman said. 
  
 Japanese coast guard officials inspect a wooden boat after it was found drifting off country's coast on Tuesday. JIJI PRESS / AFP - Getty Images 
  
 All the vessels been found off a large stretch of the country's western shoreline, covering five prefectures from Hokkaido in the north to Fukui in the southwest. They were discovered in the Sea of Japan, which separates the country from Russia and the Koreas. 
  
 The boat towed ashore in Fukui on Tuesday contained seven bodies, according to the spokesman. 
  
 More evidence of the boats' origins came last year, when the coast guard rescued four men in a similar wooden vessel who claimed to be North Korean fishermen, the spokesman added. 
  
 It is not the first time such vessels have been discovered; 80 boats were reported in 2013, 65 in 2014, and 34 so far this year, according to the coast guard. Some of these boats also contained corpses. ||||| Japan is investigating a number of suspicious boats that have been found drifting off the country’s coastline with decaying bodies on board, officials have said. 
  
 There have been 11 wooden boats found so far, some which are badly damaged. 
  
 Authorities are investigating the situation, but local media has speculated that the boats may have come from North Korea. 
  
 Some of the boats have been found to be carrying up to 20 dead bodies inside them, according to a coastguard spokesman. 
  
 The boats have been found in the Sea of Japan – known as the East Sea in North and South Korea – this month and last. 
  
 Many of the boats have been towed to Japanese ports, but the bodies are yet to be identified, he said. 
  
 The latest boat to be discovered was pulled ashore at Fukui port, where three sets of human remains were found. 
  
 Japanese bathe in wine to celebrate Beaujolais Nouveau 
  
 The coast guard spotted the boat 100km (62miles) offshore in the Sea of Japan. 
  
 Tokyo Broadcasting System reported that the remains were badly decomposed and partially skeletonised. 
  
 Japan’s public broadcaster, NHK reported that a piece of cloth, thought to come from a North Korean flag was found inside one of the boats, while writing on one of the boats is believed to say “Korean People’s Army” on the side. 
  
 Experts investigating the case have suggested these boats and bodies may belong to North Korean fisherman. 
  
 After a number of bad harvests, the closed-off country has been trying to improve the amount of fish its fisherman catch. 
  
 But the fishing equipment is difficult to manoeuvre and lacks equipment such as radars. A maritime expert told NHK these boats could have been drifting for months without anyone knowing where they were. 
  
 Others have said the boats could be people attempting to escape the communist state. ||||| 25 corpses retrieved from boats adrift in Sea of Japan over 2 months 
  
 ISHIKAWA (TR) – Law enforcement and maritime security officials have confirmed the discovery of more than two dozen bodies aboard vessels drifting in the Sea of Japan over the past two months, reports NHK (Nov. 25). 
  
 In October and November, authorities have found 25 bodies inside 11 wooden vessels floating off the coast off five prefectures, extending from Fukui to Hokkaido. 
  
 The Japan Coast Guard suspects that the vessels originated from North Korea. Since 2013, at least 175 boats have drifted from the Korean peninsula to Japan. Of the sailors who managed to be rescued by coast guard personnel, some indicated that they were fishermen from North Korea. 
  
 Satoru Miyamoto, a professor at Seigakuin University, says that North Korean leader Kim Jong Un is seeking to achieve self-sufficiency for the food supply. 
  
 “North Korea may be dedicating a large number of boats amid a push to boost its fisheries business,” one expert tells NHK, “but with these repeated instances of trouble it is clear that they lack sufficient equipment, such as radar and GPS devices, to navigate in extremely harsh weather.” 
  
 On Sunday, three bodies were discovered after divers boarded a nine-meter-long wooden vessel found floating about 110 kilometers north-northwest of the town of Echizen in Fukui Prefecture. The sex and nationality of the bodies are unknown. 
  
 Two days before, two wooden boats were found capsized off Wajima City, Ishikawa Prefecture. A total of 10 bodies and fishing nets were later discovered inside the vessels. A third boat was found abandoned in nearby waters. Korean lettering on the hull of the third boat read, “The Korean People’s Army No. 325.” |||||
A:
Over the past two months, the Japanese coast guard has been towing in gruesome finds off its western shores: fishing boats filled with nets, hooks, and, in some of the boats, decomposing corpses, NBC News reports. A total of between 20 to 25 bodies on 11 vessels (the latest boat reportedly had anywhere from three to seven bodies inside, based on conflicting media reports) have been retrieved so far in the Sea of Japan along shoreline that stretches over five prefectures, from Hokkaido in the north to Fukui in the southwest. That body of water separates the island nation from Russia and the Koreas—and authorities suspect that the boats came from North Korea, based on scraps of cloth that featured the Korean alphabet, NBC notes. The boats have, for the most part, been pulled to Japan's shores, but the bodies still need to be IDed, per the BBC. Per the Independent, the latest boat towed into a Fukui port was spotted about 62 miles out to sea and contained remains that "were badly decomposed and partially skeletonized," Tokyo Broadcasting System reports. The paper also notes that Japan's public broadcaster, NHK, reports a cloth fragment believed to be part of the North Korean flag was found inside one of the boats; meanwhile, writing on the outside of one of the vessels is believed to say "Korean People's Army." So how and why did the boats end up adrift and their occupants dead? Some experts say refugees may have tried to escape their homeland, while others say fishermen could have simply been carried too far from land in their non-GPS boats and been lost at sea for months, per the Independent. At least 175 boats have drifted from the Korean Peninsula to Japan since 2013, and some of those who've been rescued have told the Japanese coast guard they're North Korean fishermen, the Tokyo Reporter notes. (Fishing isn't the only way North Korea is trying to bring in money.)