More than €4 million was raised in 2009 for investment in early stage enterprises through an angel investor network, new figures show.

The Halo Business Angel Network (HBAN), a joint initiative of InterTradeIreland and Enterprise Ireland, helped raise the funding through its regional networks and investment syndicates.

The money was invested in 21 early-stage firms in high-tech areas, including medical devices, mobile security solutions, life sciences and biotechnology solutions.

About €3.6 million was raised through investor networks at four regional business innovation centres, while more than €800,000 was raised through angel investment syndicates co-ordinated by HBAN.