Local residents marched on Sunday (April 5) in the southern Mexican state of Veracruz, to protest an oil spill that has affected the Gulf of Mexico coastline for weeks. <br /><br />Mexican officials said they are investigating two possible causes of the spill: natural seepage and an unidentified vessel that authorities are still trying to identify.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
