The $42 million stolen in the GMX V1 GLP pool hack included $32 million extracted from Arbitrum and $9.6 million later bridged to Ethereum.

Quotes that support claims

Most of the funds, around $32 million, were moved from the Arbitrum network, while the rest , about $9.6 million, was transferred to Ethereum.

Roughly $9.6 million of the estimated $42 million haul was bridged from Arbitrum to Ethereum using Circle’s Cross-Chain Transfer Protocol, with portions swiftly converted to DAI.