April 10 (Reuters) - The Russian rouble opened down on Monday, continuing last week's decline, which saw the currency hit lows unseen since April 2022, driven in part by demand for foreign currency amid sales of Russian assets by non-residents.

At 0830 GMT, the rouble was 0.59% weaker against the dollar at 81.59 and had lost 0.22% to trade at 89.10 versus the euro. It had shed 0.34% against the yuan to 11.85.

In a note, Alexei Antonov, head of investment at ALOR Broker, said that though the rouble continued to look weak, and that its movement would largely depend on demand for foreign currency, the currency continued to appear "oversold".

Brent crude oil, a global benchmark for Russia's main export, was up 0.01% at $85.13 a barrel.

Russian stock indexes were up.

The dollar-denominated RTS index was up 0.35% to 978.05 points. The rouble-based MOEX Russian index was 0.94% higher at 2,523.34 points.

For Russian equities guide see

For Russian treasury bonds see (Editing by Uttaresh Venkateshwaran)