PRAGUE- Slovakia's allies will place the fourth Patriot air defence system in the NATO country to secure its territory after it donated its S-300 system to Ukraine, Slovak Defence Minister Jaroslav Nad said on Friday.

The ministry said the Patriot battery would arrive next week, in addition to batteries brought to Slovakia by Germany and the Netherlands in March, and stay in Slovakia for as long as needed.

(Reporting by Jan Lopatka; Editing by Andrew Heavens)