BuddyPress.org

Hello. When i try to add an image to the content of bp_activity_add it works BUT only for admins

$content   = '<a href="' . $detail_link . '"><img src="' . $image_url . '" width="100" height="50" alt=""></a>'."\n";
$content   .= ''."\n";
$content   .= '' . $comment->comment_content . '';
bp_activity_add(array(
'user_id' => $user_ID,
'action' => $action,
'content' => $content,
'component' => $component,
'primary_link' => $detail_link,
'type' => $type
));

What i observed is that direct URL for any image in content section will fail. But it works for any admin. I am confused why is that. Any other link works well this is only for image links.

Any idea?
Thanks