diff --git a/app/api/users/[userId]/route.ts b/app/api/users/[userId]/route.ts
index 25de7413..fc7b3415 100644
--- a/app/api/users/[userId]/route.ts
+++ b/app/api/users/[userId]/route.ts
@@ -5,7 +5,14 @@ import { NextResponse } from "next/server";
 // Helper function to get Leantime user ID by email
 async function getLeantimeUserId(email: string): Promise<number | null> {
   try {
-    // Get user directly by email
+    // Validate email format
+    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+    if (!emailRegex.test(email)) {
+      console.error('Invalid email format');
+      return null;
+    }
+
+    // Get user by email using the proper method
     const userResponse = await fetch('https://agilite.slm-lab.net/api/jsonrpc', {
       method: 'POST',
       headers: {
@@ -23,22 +30,29 @@ async function getLeantimeUserId(email: string): Promise<number | null> {
     });
 
     const userData = await userResponse.json();
-    console.log('Leantime get user response:', userData);
+    
+    // Only log minimal information for debugging
+    console.log('Leantime user lookup response status:', userResponse.status);
 
     if (!userResponse.ok || !userData.result) {
-      console.error('Failed to get Leantime user:', userData);
+      console.error('Failed to get Leantime user');
+      return null;
+    }
+
+    // The result should be the user object or false
+    if (userData.result === false) {
       return null;
     }
 
     return userData.result.id;
   } catch (error) {
-    console.error('Error getting Leantime user:', error);
+    console.error('Error getting Leantime user');
     return null;
   }
 }
 
 // Helper function to delete user from Leantime
-async function deleteLeantimeUser(email: string): Promise<{ success: boolean; error?: string }> {
+async function deleteLeantimeUser(email: string, requestingUserId: string): Promise<{ success: boolean; error?: string }> {
   try {
     // First get the Leantime user ID
     const leantimeUserId = await getLeantimeUserId(email);
@@ -49,6 +63,15 @@ async function deleteLeantimeUser(email: string): Promise<{ success: boolean; er
       };
     }
 
+    // Check if the requesting user has permission to delete this user
+    // This is a placeholder - implement proper permission check based on your requirements
+    if (!await hasDeletePermission(requestingUserId, leantimeUserId)) {
+      return {
+        success: false,
+        error: 'Unauthorized to delete this user'
+      };
+    }
+
     const response = await fetch('https://agilite.slm-lab.net/api/jsonrpc', {
       method: 'POST',
       headers: {
@@ -66,19 +89,20 @@ async function deleteLeantimeUser(email: string): Promise<{ success: boolean; er
     });
 
     const data = await response.json();
-    console.log('Leantime delete response:', data);
+    
+    // Only log minimal information
+    console.log('Leantime delete response status:', response.status);
 
     if (!response.ok || !data.result) {
-      console.error('Leantime user deletion failed:', data);
       return { 
         success: false, 
-        error: data.error?.message || 'Failed to delete user in Leantime' 
+        error: 'Failed to delete user in Leantime' 
       };
     }
 
     return { success: true };
   } catch (error) {
-    console.error('Error deleting Leantime user:', error);
+    console.error('Error deleting Leantime user');
     return { 
       success: false, 
       error: 'Error deleting user in Leantime' 
@@ -86,6 +110,16 @@ async function deleteLeantimeUser(email: string): Promise<{ success: boolean; er
   }
 }
 
+// Placeholder for permission check - implement based on your requirements
+async function hasDeletePermission(requestingUserId: string, targetUserId: number): Promise<boolean> {
+  // Implement proper permission check logic here
+  // For example:
+  // 1. Check if requesting user is admin
+  // 2. Check if requesting user is trying to delete themselves
+  // 3. Check if requesting user has the right role/permissions
+  return true;
+}
+
 export async function DELETE(
   req: Request,
   { params }: { params: { userId: string } }
@@ -115,7 +149,7 @@ export async function DELETE(
 
     const tokenData = await tokenResponse.json();
     if (!tokenResponse.ok || !tokenData.access_token) {
-      console.error("Failed to get admin token:", tokenData);
+      console.error("Failed to get admin token");
       return NextResponse.json({ error: "Erreur d'authentification" }, { status: 401 });
     }
 
@@ -130,7 +164,7 @@ export async function DELETE(
     );
 
     if (!userResponse.ok) {
-      console.error("Failed to get user details:", await userResponse.text());
+      console.error("Failed to get user details");
       return NextResponse.json(
         { error: "Erreur lors de la récupération des détails de l'utilisateur" },
         { status: userResponse.status }
@@ -151,19 +185,18 @@ export async function DELETE(
     );
 
     if (!deleteResponse.ok) {
-      const errorData = await deleteResponse.json();
-      console.error("Keycloak delete error:", errorData);
+      console.error("Keycloak delete error");
       return NextResponse.json(
-        { error: "Erreur lors de la suppression de l'utilisateur", details: errorData },
+        { error: "Erreur lors de la suppression de l'utilisateur" },
         { status: deleteResponse.status }
       );
     }
 
     // Delete user from Leantime
-    const leantimeResult = await deleteLeantimeUser(params.userId);
+    const leantimeResult = await deleteLeantimeUser(userDetails.email, session.user.id);
 
     if (!leantimeResult.success) {
-      console.error("Leantime user deletion failed:", leantimeResult.error);
+      console.error("Leantime user deletion failed");
       // We don't return an error here since Keycloak user was deleted successfully
       // We just log the error and continue
     }
@@ -171,9 +204,9 @@ export async function DELETE(
     return NextResponse.json({ success: true });
 
   } catch (error) {
-    console.error("Error deleting user:", error);
+    console.error("Error deleting user");
     return NextResponse.json(
-      { error: "Erreur serveur", details: error },
+      { error: "Erreur serveur" },
       { status: 500 }
     );
   }