Singapore, July 28 (QNA) - Oil prices extended declines on Tuesday, down by over $1 per barrel to their lowest level since July 20.

Brent crude futures were down $1.47, or 1.66%, at $86.89.

US West Texas Intermediate (WTI) crude was at $81.16 a barrel, down $1.45, or 1.76%.

Both contracts ​slid around 8% in the prior session. (QNA)