low seq tx is pending but higher seq tx is confirmed

[zhp1254]

messag hash: 48a4a048cd05032b29d08387bd46988a23e07424c5872230ce5e27f3b8872da4 seq: 67 is pending
message hash: 01a261c1ecec4ca9632bd69b7d18c91eabfa08731cc47490615470b6d3626723 seq: 70 is complete

1、is this normal and why?
2、how can i cancel 48a4a048cd05032b29d08387bd46988a23e07424c5872230ce5e27f3b8872da4 ?

[xssnick]

Possibly because of queue in destination address's shard, cancellation is not possible when tx is already started