The spat between Penang Chief Minister Lim Guan Eng and his predecessor Koh Tsu Koon continues, with Lim throwing a challenge to Koh to 'take action' if he (Lim) had lied.

Responding to the minister in Prime Minister's Department for calling him a liar for questioning Koh's statement that a RM4 billion research centre would be opened in Penang, Lim showed a stack of mainstream media news clippings announcing the centre.

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