Has (-ed) or (-ed)?

[AlexAlex]

Good evening!
I am trying study English and reading on english, and I have more questions:

I read news:

The Security Service of Ukraine has detained a 37-year-old resident of ....

and I read another news and she has only (-ed)

Security Service of Ukraine detained a "sleeper" ....

1.1. Why does one news item have an "has" and the other does not?
1.2. Why is the ending "ed" used when "has" is only used in the present tense?

Thanks!

 

[5jj]

The Security Service of Ukraine has detained a 37-year-old resident of ....
The present perfect form (in bold) draws attention to the present relevance of the detaining.

Security Service of Ukraine detained a "sleeper" ....
Emphasis is on the past time of the action.

In future, please give us the source of your sentences.

 

[AlexAlex]

The Security Service of Ukraine has detained a 37-year-old resident of ....
The present perfect form (in bold) draws arrention to the present relevance of the detaining.

Security Service of Ukraine detained a "sleeper" ....
Emphasis is on the past time of the action.

In future, plese give us the source of your sentences.

Security Service of Ukraine detains a man who was correcting missile strikes on the positions of the Armed Forces of Ukraine in the Donetsk Region

VALENTYNA ROMANENKO – WEDNESDAY, 10 AUGUST 2022, 12:58

www.pravda.com.ua

Security Service of Ukraine reports on detaining a collaborator who was adjusting fire on Kharkiv - the Regional State Administration

YEVHEN KIZILOV – FRIDAY, 12 AUGUST 2022, 12:43

www.pravda.com.ua

5jj, So are both correct?

1.1. In other words, "has detained" shows that it was today?
1.2. And if without "detained", does it mean it was yesterday?