diff --git a/src/components/Search/SearchList.tsx b/src/components/Search/SearchList.tsx
index 51128bbe5c8e3..bfb3104712704 100644
--- a/src/components/Search/SearchList.tsx
+++ b/src/components/Search/SearchList.tsx
@@ -96,6 +96,14 @@ type SearchListProps = Pick<FlashListProps<SearchListItem>, 'onScroll' | 'conten
 
 const keyExtractor = (item: SearchListItem, index: number) => item.keyForList ?? `${index}`;
 
+function isTransactionGroupListItemArray(data: SearchListItem[]): data is TransactionGroupListItemType[] {
+    if (data.length <= 0) {
+        return false;
+    }
+    const firstElement = data.at(0);
+    return typeof firstElement === 'object' && 'transactions' in firstElement;
+}
+
 function SearchList(
     {
         data,
@@ -125,19 +133,23 @@ function SearchList(
 
     const {initialHeight, initialWidth} = useInitialWindowDimensions();
     const {hash, groupBy, type} = queryJSON;
-    const flattenedTransactions = groupBy ? (data as TransactionGroupListItemType[]).flatMap((item) => item.transactions) : data;
-
-    const flattenedTransactionWithoutPendingDelete = useMemo(
-        () => flattenedTransactions.filter((t) => t?.pendingAction !== CONST.RED_BRICK_ROAD_PENDING_ACTION.DELETE),
-        [flattenedTransactions],
-    );
+    const flattenedItems = useMemo(() => {
+        if (groupBy) {
+            if (!isTransactionGroupListItemArray(data)) {
+                return data;
+            }
+            return data.flatMap((item) => item.transactions);
+        }
+        return data;
+    }, [data, groupBy]);
+    const flattenedItemsWithoutPendingDelete = useMemo(() => flattenedItems.filter((t) => t?.pendingAction !== CONST.RED_BRICK_ROAD_PENDING_ACTION.DELETE), [flattenedItems]);
 
     const selectedItemsLength = useMemo(
         () =>
-            flattenedTransactions.reduce((acc, item) => {
+            flattenedItems.reduce((acc, item) => {
                 return item?.isSelected ? acc + 1 : acc;
             }, 0),
-        [flattenedTransactions],
+        [flattenedItems],
     );
 
     const {translate} = useLocalize();
@@ -222,7 +234,7 @@ function SearchList(
 
     const [focusedIndex, setFocusedIndex] = useArrowKeyFocusManager({
         initialFocusedIndex: -1,
-        maxIndex: flattenedTransactions.length - 1,
+        maxIndex: flattenedItems.length - 1,
         isActive: isFocused,
         onFocusedIndexChange: (index: number) => {
             scrollToIndex(index);
@@ -352,7 +364,7 @@ function SearchList(
 
     const tableHeaderVisible = canSelectMultiple || !!SearchTableHeader;
     const selectAllButtonVisible = canSelectMultiple && !SearchTableHeader;
-    const isSelectAllChecked = selectedItemsLength > 0 && selectedItemsLength === flattenedTransactionWithoutPendingDelete.length;
+    const isSelectAllChecked = selectedItemsLength > 0 && selectedItemsLength === flattenedItemsWithoutPendingDelete.length;
 
     const getItemHeight = useMemo(
         () =>
@@ -407,11 +419,11 @@ function SearchList(
                         <Checkbox
                             accessibilityLabel={translate('workspace.people.selectAll')}
                             isChecked={isSelectAllChecked}
-                            isIndeterminate={selectedItemsLength > 0 && selectedItemsLength !== flattenedTransactionWithoutPendingDelete.length}
+                            isIndeterminate={selectedItemsLength > 0 && selectedItemsLength !== flattenedItemsWithoutPendingDelete.length}
                             onPress={() => {
                                 onAllCheckboxPress();
                             }}
-                            disabled={flattenedTransactions.length === 0}
+                            disabled={flattenedItems.length === 0}
                         />
                     )}
 
diff --git a/src/components/Search/index.tsx b/src/components/Search/index.tsx
index c3164a157e32f..3ea88a1beeda8 100644
--- a/src/components/Search/index.tsx
+++ b/src/components/Search/index.tsx
@@ -272,6 +272,13 @@ function Search({queryJSON, searchResults, onSearchListScroll, contentContainerS
             return [];
         }
 
+        // Group-by option cannot be used for chats or tasks
+        const isChat = type === CONST.SEARCH.DATA_TYPES.CHAT;
+        const isTask = type === CONST.SEARCH.DATA_TYPES.TASK;
+        if (groupBy && (isChat || isTask)) {
+            return [];
+        }
+
         return getSections(type, searchResults.data, searchResults.search, groupBy, exportReportActions, currentSearchKey);
     }, [currentSearchKey, exportReportActions, groupBy, isDataLoaded, searchResults, type]);