Authorities in Kassala said opposition forces based in Eritrea have been laying landmines and stealing vehicles and other goods to smuggle them across the border into Eritrea .
<response> Authorities in <location>Kassala</location> said opposition forces based in <location>Eritrea</location> have been laying landmines and stealing vehicles and other goods to smuggle them across the border into <location>Eritrea</location> . </response>