KUALA LUMPUR: The Asian Football Confederation (AFC) is keeping a close watch on security developments in Riyadh ahead of continental club fixtures scheduled in the Saudi Arabian capital tonight.

The alert follows consecutive missile and drone strikes targeting King Khalid International Airport on Saturday and Sunday, which caused casualties, temporarily halted airport operations, and prompted regional flight cancellations and travel advisories.

The security scare coincides with matchday two of the revamped Asian Champions League Elite (ACLE) in the West Region.

Action in the capital is scheduled for tonight, with Cristiano Ronaldo's Al-Nassr hosting Uzbekistan's Neftchi at King Saud University Stadium at 9.15pm local time (2.15am Tuesday, Malaysian time).