diff --git a/powershell/ql/src/AlertSuppression.ql b/powershell/ql/src/AlertSuppression.ql
new file mode 100644
index 000000000000..e12ed784b182
--- /dev/null
+++ b/powershell/ql/src/AlertSuppression.ql
@@ -0,0 +1,36 @@
+/**
+ * @name Alert suppression
+ * @description Generates information about alert suppressions.
+ * @kind alert-suppression
+ * @id powershell/alert-suppression
+ */
+
+private import codeql.util.suppression.AlertSuppression as AS
+private import powershell as P
+
+class AstNode extends P::Ast {
+  predicate hasLocationInfo(
+    string filepath, int startline, int startcolumn, int endline, int endcolumn
+  ) {
+    this.getLocation().hasLocationInfo(filepath, startline, startcolumn, endline, endcolumn)
+  }
+}
+
+class SingleLineComment extends P::SingleLineComment {
+  private string text;
+
+  SingleLineComment() {
+    // Strip the leading '#' from single-line PowerShell comments
+    text = this.getCommentContents().getValue().suffix(1)
+  }
+
+  predicate hasLocationInfo(
+    string filepath, int startline, int startcolumn, int endline, int endcolumn
+  ) {
+    this.getLocation().hasLocationInfo(filepath, startline, startcolumn, endline, endcolumn)
+  }
+
+  string getText() { result = text }
+}
+
+import AS::Make<AstNode, SingleLineComment>