South Korea ? Three days after shutting down the border, North Korea agreed to partially reopen the crossing today to let South Koreans stranded in a northern industrial zone head home, Seoul officials said.

But North Korea is not yet allowing South Koreans or cargo back across the border to the dozens of factories in Kaesong run by southern business managers, the South’s Unification Ministry said.

Hundreds of South Koreans working at factories in the border town were stuck in the North all weekend after officials shut the crossing Friday for the second time in a week amid heightened tensions on the peninsula.

The seemingly arbitrary border restrictions have unnerved South Korean business owners who run factories and rely on trucking in raw goods from the South into the impoverished North to produce everything.