SEOUL, South Korea (YTN /CNN) - South Korean police said Wednesday they are investigating a computer outage affecting servers at three leading television broadcasters and a large bank.
One television station, YTN, reported that 500 of its computers had been disabled by the outage. Another, KBS, said that its internal networks had been "paralyzed," but that the problem didn't prevent it from broadcasting live.
A third broadcaster, MBC, was also reportedly experiencing problems.
Customers of Shinhan Bank are unable to log into the lender's website at the moment, the company said in a statement.
Police didn't immediately provide a reason for the server problems.
The South Korean defense ministry said it had upgraded its information operations condition, or INFOCON, one notch to level 3 in response to the outages. Level 1 is the highest on the scale.
The South Korean president's office said it was investigating the situation alongside the National Intelligence Service and other related departments.
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