Crescent Capital Investments has sweetened its takeover offer for infrastructure services group Cardno, boosting the deal to $3.45 per share, one week after competitor Coffey announced a friendly takeover deal with global player Tetra Tech.

Crescent Capital Investments has sweetened its takeover offer for infrastructure services group Cardno, boosting the deal to $3.45 per share, one week after competitor Coffey announced a friendly takeover deal with global player Tetra Tech.