[yasp]

So was a warrant issued or not? In the US, at least, being "unable to formally notify [someone] of allegations" would not prevent a warrant from being issued.

[Veen]

A warrant was issued, but while he was in the embassy the Swedish government couldn't serve him with a notification of it.

Top prosecutor Marianne Ny said his arrest warrant was being revoked as it was impossible to serve him notice.

https://www.bbc.co.uk/news/world-europe-39973864

You are unlikely to come to sound conclusions if you reason on the basis of your knowledge of US law. Sweden is not the US.

[akvadrako]

This is not the US, so US legal customs are irrelevant.

[evilmoo]

This isn't in the US.

There are many differences between the US and EU/UK.