<sod >Tunisian police haveÂ arrested the nephew of the suspected Berlin truck attacker and two other menÂ thought to be "connected" to Anis Amri, the interior ministry said.< eod>< sod > Tunisian police haveÂ arrested the nephew of the suspected Berlin Christmas market attacker and two other menÂ thought to be "connected" to Anis Amri.< eod>