How to search a specific sequence in BAM files for 10X experiment I have to search a specific sequence in a set of cells (> 1k cells) from a single-cell experiment done with 10X genomics.

As input file I have a single bam file, and 24 fastqs, therefore each file contains information about several cells. How can I search for a specific sequence and underpin which single cells have it?

I should be able to search for a specific sequence in a bam using samtools, etc. But the issue here is how to demultiplex the data from different cells to understand which cell provide the sequence.
The bam file has bam tags which say what reads belong to what cells.

https://support.10xgenomics.com/single-cell-gene-expression/software/pipelines/latest/output/bam