Loose metal reinforcing strip exposed in plaster beside window – can I remove it and fill?

[Jtaylor758]

I've got an area of damaged plaster at the bottom of the wall beside a window reveal, where it meets the windowsill.

A narrow metal strip has become exposed beneath the plaster. It runs vertically up the edge of the reveal, and the exposed section flexes in and out when pressed. It doesn't appear to be rusty.

I'm looking to redecorate and would like to repair the damage properly.

Does anyone know what this metal strip is likely to be? Is it safe to remove the loose section, fill the gap and sand it smooth, or does the metal need to be secured or replaced first?

I've attached photos showing a close-up and the wider area.

Thanks all!

 

[Wayners]

Yeah.
Remove and make good corner with fillers.
Those tapes are known to cause trouble like that if not stuck well.
It's this stuff.
Plasterboard Corner Tape 50mm x 30m | Toolstation https://share.google/vm5zRQ2hY5ekvVzGd