A diplomat assigned to the Dominican Republic’s Port-au-Prince embassy is Haiti’s latest kidnapping victim, a senior Haitian government official has confirmed. Carlos Guillén Tatis was traveling through a gang stronghold and site of ongoing violence by warring armed gangs on Friday when he was reportedly abducted while on his way to the Haitian-Dominican border. Guillén Tatis works as an agricultural adviser in the Dominican embassy and is also reportedly a U.S. citizen. As of late Monday, his whereabouts remained unknown, said the source, confirming that the Haitian government was notified im…