As it happened: ASX falls 1.7% to three-week low

Summary

• The ASX 200 closes 1.7 per cent lower at 6051 points, a decline of 104.6 points
• Futures point to small recovery on Wall Street tonight after all indices declined on Monday
• Building materials giant Boral is selling its 50% share in its international plasterboard business to joint venture partner Knauf for $1.43b
• Blackmores rose 7.8% to a near four-week high of $68.38 this morning after announcing the sale of Global Therapeutics for $27m, but ended the session only 0.7% higher